STORY HIGHLIGHTS
- NEW: 37 branches or offices of 21 banks are closed Tuesday in Hong Kong
- 56 people injured and 89 people arrested since protests started, officials say
- Protesters pack streets wearing masks and protective goggles
- "We had to use force" on protesters, a police official says
Are you there? Share images, but stay safe.
Hong Kong (CNN) -- Thousands of demonstrators bracing for the possibility of a police crackdown stood their ground in the heart of Hong Kong on Tuesday.
Protesters had masks, protective goggles and plastic raincoats on hand as they camped out on the main thoroughfare leading into the city's central business district.
"They're all ready just in case there is any sort of move by the Hong Kong police," CNN's Andrew Stevens reported.
It's been more than a day since officers fired tear gas and pepper spray at the crowd.
At least 56 people have been injured so far in the largely student-led protests, which flared into violence starting Sunday, a Hong Kong government spokeswoman said.
The head of the Hong Kong government urged protesters to clear roads Tuesday, saying they are impeding any emergency vehicles that may need to pass.
"The main roads are used by fire trucks and ambulances. They now have to take a detour, so we urge the society to think about this," Hong Kong Chief Executive C.Y. Leung told reporters.
Demonstrations began in response to China's decision to allow only Beijing-vetted candidates to stand in the city's 2017 election for the top civil position of chief executive. Protesters say Beijing has gone back on its pledge to allow universal suffrage in Hong Kong, which was promised "a high degree of autonomy" when it was handed back to China by Britain in 1997.
Leung said Tuesday that China will not back down from its position on Hong Kong.
"China will not compromise to the illegal threats of some people," he said. "Based on the basic law, we will be able to have one person, one vote universal suffrage. China's decision is based on and using what the basic law allows them to do."
"I understand this universal suffrage is somewhat different to what the public thinks it would be," he added. "But this is based on the basic law. We still want to remain peaceful, calm and think what the best is for Hong Kong."
View from the ground in Hong Kong
Chow: Protesters should find another way

Police remove barricades and tents outside government headquarters in Hong Kong on Thursday, December 11. The main site of pro-democracy protests for the past two months was broken down piece by piece, and police dragged out the last remaining demonstrators one by one.
Workers clear barricades on December 11. Protesters wanted to pressure the government to allow open elections for Hong Kong's chief executive in 2017.
Authorities dismantle a barricade December 11 at the main protest site.
A police officer removes a protest banner from a bridge December 11.
A worker cleans the street after Hong Kong police dismantled the main protest camp December 11.
Protesters attend a sit-in rally as police officers break down the campsite.
Police officers take away a protester December 11.
A protester is carried away by police officers on December 11.
A crowd listens to a speaker at the main Hong Kong protest site in Admiralty on Tuesday, December 9.
Few pro-democracy activists tents remain on the road outside Hong Kong's Government Complex on December 9.
Hong Kong teenage protest leader Joshua Wong ended his hunger strike after about five days on Saturday, December 6, on the advice of his doctor.
The three co-founders of the Occupy Central movement -- from left, Benny Tai Yiu-ting, Chan Kin-man, and the Rev. Chu Yiu-ming -- surrender to authorities in Hong Kong on Wednesday, December 3.
Student protest leader Joshua Wong carries his belongings toward a tent at the main protest site in Hong Kong's Admiralty district on Tuesday, December 2. Wong and two other student demonstrators have begun a hunger strike to demand discussions with Hong Kong's leaders over political reform for the city.
Pro-democracy protesters gather outside the Central Government Complex in Hong Kong on Monday, December 1.
Police arrest a protester outside government headquarters in Hong Kong on December 1.
A police officer clears umbrellas from the Lung Wo road tunnel after clashes between protesters and police on December 1.
Pro-democracy protesters face police forces after clashes in the Admiralty district of Hong Kong on Sunday, November 30.
A protester reacts after being hit by pepper spray on November 30.
Hundreds of pro-democracy protesters face off with Hong Kong police on November 30.
Pro-democracy protesters collide with police officers on the main road outside the government headquarters in Hong Kong on November 30.
Police prepare to face protesters on Lung Wo Road outside Hong Kong's Government complex on November 30.
Pro-democracy protesters push police back as they advance on Lung Wo Road outside Hong Kong's Government complex on November 30.
Policemen keep vigil as pro-democracy demonstrators gather on street parallel to where a protest site was cleared in the Mongkok district of Hong Kong on Friday, November 28.
Protesters cry as police officers try to stop them from blocking the road in the Mong Kok district of Hong Kong on Wednesday, November 26.
Police clash with protesters as they try to clear a major protest site on Tuesday, November 25.
A protester is carried away by police officers on November 25. Hong Kong's high court authorized police to arrest protesters who obstruct clearance of the area.
Police try to arrest a protester on November 25.
A demonstrator is sprayed with pepper spray by the police after refusing to leave the protest site on November 25.
Protesters break a glass door of the Legislative Council on Wednesday, November 19.
Protesters stand off with police officers outside the Legislative Council building after clashes on November 19.
Security staff members remove a barricade outside the CITIC tower near a protest site in the Admiralty district of Hong Kong on Tuesday, November 18.
There were no signs of resistance from protesters, some of whom helped bailiffs, police and CITIC representatives move barricades away on November 18.
The Admiralty protest site is shown on the road outside the Hong Kong Government complex on Monday, November 17.
Student leaders attempted to fly to Beijing to deliver a message to the Chinese government on Saturday, November 15. They were denied boarding after being informed that their entry permits were invalid.
A businessman walks to work past protester-placed barricades that blocked a road at the Admiralty protest site on Thursday, November 13.
People open umbrellas at the main protest site in Hong Kong on Tuesday, October 28. The umbrella has become the defining image of the protest movement, used to shield protesters from tear gas and the elements.
Riot police stand guard near a barricade in a protester-occupied area on Wednesday, October 22.
Pro-democracy protesters at an occupied area outside the government headquarters in Hong Kong watch a live broadcast of talks between Hong Kong government officials and protesters on Tuesday, October 21.
Police and protesters face each other across a barricade as tensions continue in Hong Kong on Monday, October 20.
Riot police advance on a pro-democracy protest encampment early Sunday, October 19.
A woman reads on a road barricaded by pro-democracy protesters on October 19.
Police officers yell at pro-democracy protesters as they push forward in an attempt to clear a street on Saturday, October 18.
Pro-democracy protesters sleep next to a barricade on October 18 after reclaiming streets in Mong Kok after a night of violent scuffles with police.
A journalist collapses in agony after being hit in the face with pepper spray during clashes with police on Friday, October 17.
Police use batons to hit pro-democracy protesters who are using raised umbrellas for protection on October 17.
Protesters and riot police officers face off at a main road on October 17.
People shout at pro-democracy protesters on October 17.
Riot police clear out an encampment of protesters on October 17. Police swooped in early to dismantle the protest campsite.
Demonstrators remove their belongings from a protest camp early on October 17.
Pro-democracy protesters break down as riot police clear their camp October 17.
Riot police remove barricades on October 17.
Hong Kong Chief Executive C.Y. Leung arrives for a news conference on October 16. He said talks would resume with students as early as next week, but he said street protests had caused severe disruption and could not continue.
Pro-democracy demonstrator Ken Tsang gets taken taken away by police before allegedly being beaten up in Hong Kong on October 15. Authorities have vowed to conduct an investigation into a widely circulated video that appears to show plainclothes officers kicking and punching the man.
A police officer shouts at a protester who was hit with pepper spray on October 15.
Pro-democracy protesters hide behind umbrellas to protect themselves from pepper spray on October 15.
Protesters move barriers as others block a main road in Hong Kong with metal and plastic safety barriers on October 15.
Police march toward pro-democracy protesters outside central government offices on October 15.
Protesters gather near central government offices on October 15.
Police move toward pro-democracy protesters during a standoff outside central government offices on October 14.
Police remove bamboo that pro-democracy protesters had set up to block off main roads on October 14.
Pro-democracy protesters watch as police remove barricades on October 14.
Cleaners sweep the main road after the police's removal of barricades on October 14.
Police ask a protester to leave the main road of Hong Kong's Central district on October 14.
Police dismantle barricades from the streets on October 14.
Police officers run to barricades set up by protesters on October 14.
Protesters raise their hands behind police officers after people tried to remove the metal barricades that protesters set up to block off main roads near the city's financial district on October 13.
A police officer tries to stop a man from removing metal barricades set up by protesters on October 13.
A police officer scuffles with a man on October 13.
Police officers arrest a demonstrator on October 13.
A demonstrator sets up a new barricade made of bamboo in Hong Kong on October 13.
Police officers remove barricades used by protesters on October 13.
Taxi drivers protest in Hong Kong on October 13, urging pro-democracy demonstrators to clear the roads.
People gather beneath the statue "Umbrella Man," by the Hong Kong artist known as Milk, which has become a symbol at the protest site, on Saturday, October 11, in Hong Kong.
Pro-democracy protesters remain scattered at the protest site in Admiralty on Thursday, October 9. The government canceled talks that day after protest leaders urged supporters to keep up the occupation.
Taxi drivers attend a small demonstration calling for protesters to stop blocking roads through the city on October 9.
A woman drinks a soda as she walks past a barricade erected by pro-democracy demonstrators in Hong Kong on October 9.
A pro-democracy protester sleeps on a street in the occupied area surrounding the government complex in Hong Kong on Wednesday, October 8.
A pro-democracy protester reads a newspaper in Hong Kong's Mong Kok district on Tuesday, October 7, as a police officer stands nearby.
Protesters walk up an empty street inside the protest site near Hong Kong's government complex on October 7.
Joshua Wong, a 17-year-old student protest leader, is interviewed at the protest site near government headquarters on Monday, October 6.
A man walks to work as pro-democracy demonstrators sleep on the road in the occupied areas surrounding the government complex in Hong Kong on October 6.
A ray of sunlight bathes sleeping protesters as they occupy a major highway in Hong Kong on October 6. Protesters say Beijing has gone back on its pledge to allow universal suffrage in Hong Kong, which was promised "a high degree of autonomy" when it was handed back to China by Britain in 1997.
People take an escalator to work as protesters sleep on October 6.
The statue "Umbrella Man," by the Hong Kong artist known as Milk, stands at a pro-democracy protest site in the Admiralty district on October 6.
People walk to work on a main road in the occupied areas of Hong Kong on October 6.
Police officers remove barriers outside government offices in Hong Kong on Sunday, October 5.
Student protesters carry a barrier to block a street leading to the protest site on October 5.
Pro-democracy demonstrators occupy the streets near government headquarters on October 5.
Pro-democracy demonstrators surround police October 5 in the Mong Kok district of Hong Kong.
A pro-democracy protester holds on to a barrier as he and others defend a barricade from attacks by rival protest groups in the Mong Kok district on Saturday, October 4.
Pro-democracy student protesters pin a man to the ground after an assault during a scuffle with local residents in Mong Kok on October 4.
Pro-democracy protesters raise their arms in a sign of nonviolence as they protect a barricade from rival protest groups in the Mong Kok district on October 4.
A pro-Beijing activist holds up blue ribbons for anti-Occupy Central protestors to collect as pro-government speeches are made in the Kowloon district of Hong Kong on October 4.
A man sits in front of a barricade built by pro-democracy protesters on October 4 in the Kowloon district.
Thousands of pro-democracy activists attend a rally on the streets near government headquarters on October 4 in Hong Kong.
A group of men in masks fight with a man who tried to stop them from removing barricades from a pro-democracy protest area in the Causeway Bay district of Hong Kong on Friday, October 3.
Police raise hands against protesters as an ambulance tries to leave the compound of the chief executive office in Hong Kong on October 3.
A protester tries to negotiate with angry residents trying to remove barricades blocking streets in Hong Kong's Causeway Bay on October 3. Large crowds opposed to the pro-democracy movement gathered to clear the area.
Pro-democracy demonstrators protect a barricade from "anti-Occupy" crowds in Hong Kong on October 3.
A man shouts at a pro-democracy demonstrator on October 3.
Police try to pry a man from a fence guarded by pro-democracy demonstrators on October 3.
Pro-democracy demonstrators sleep on the street outside a government complex in Hong Kong on Thursday, October 2.
As the sun rises, a protester reads during a sit-in blocking the entrance to the chief executive's office on October 2.
Yellow ribbons, a symbol of the protests in Hong Kong, are tied to a fence as police and security officers stand guard at the government headquarters on October 2.
Protesters confront police outside the government complex in Hong Kong on October 2.
Protesters camp out in a street in Hong Kong on Wednesday, October 1.
Founder of the student pro-democracy group Scholarism, Joshua Wong, center, stands in silent protest with supporters at the flag-raising ceremony at Golden Bauhinia Square in Hong Kong on October 1.
Hong Kong's Chief Executive C.Y. Leung attends a flag raising ceremony to mark the 65th anniversary of the founding of Communist China on October 1.
A pro-democracy activist shouts slogans on a street near the government headquarters on Wednesday, October 1.
Hong Kong police stand guard outside the flag-raising ceremony October 1.
Pro-democracy demonstrators gather for a third night in Hong Kong on Tuesday, September 30.
Protesters sing songs and wave their cell phones in the air after a massive thunderstorm passed over the Hong Kong Government Complex on September 30.
Protesters take part in a rally on a street outside the Hong Kong Government Complex on September 30.
Student activists rest on a road in Hong Kong on September 30, near the government headquarters where pro-democracy activists have gathered.
A pro-democracy demonstrator guards a bus covered with messages of support in Hong Kong on September 30.
Protesters sleep on the streets outside the Hong Kong Government Complex at sunrise on September 30.
Protesters hold up their cell phones in a display of solidarity during a protest outside the Legislative Council headquarters in Hong Kong on Monday, September 29.
Protesters put on goggles and wrap themselves in plastic on September 29 after hearing a rumor that police were coming with tear gas.
Police officers stand off with protesters next to the Hong Kong police headquarters on September 29.
A man helps protesters use a makeshift ladder to climb over concrete street barricades on September 29.
Riot police fire tear gas on student protesters occupying streets around government buildings in Hong Kong on September 29.
Police officers rest after protests on September 29.
Pro-democracy protesters argue with a man, left, who opposes the occupation of Nathan Road in Hong Kong on September 29.
Pro-democracy protesters sit in a road as they face off with local police on September 29.
Pro-democracy protesters rest around empty buses as they block Nathan Road in Hong Kong on September 29. Multiple bus routes have been suspended or diverted.
Police walk down a stairwell as demonstrators gather outside government buildings in Hong Kong on September 29.
Stacks of umbrellas are ready for protesters to use as shields against pepper spray on September 29.
Protesters turn the Chinese flag upside-down on September 29 outside a commercial building near the main Occupy Central protest area in Hong Kong.
Protesters occupy a main road in the Central district of Hong Kong after riot police used tear gas against them on Sunday, September 28.
Demonstrators disperse as tear gas is fired during a protest on September 28. There is an "optimal amount of police officers dispersed" around the scene, a Hong Kong police representative said.
Police use pepper spray and tear gas against demonstrators September 28. The protests, which have seen thousands of students in their teens and 20s take to the streets, swelled in size over the weekend.
Riot police clash with protesters on September 28.
Police and protesters clash during a tense standoff with thousands of student demonstrators, recently joined by the like-minded Occupy Central movement, on September 28.
Benny Tai, center, founder of the Occupy Central movement, raises a fist after announcing the group would join the students during a demonstration outside government headquarters in Hong Kong on September 28.
Pro-democracy activist and former legislator Martin Lee wears goggles and a mask to protect against pepper spray on September 28.
A pro-democracy activist shouts at police officers behind a fence with yellow ribbons on September 28.
A sign for the Hong Kong central government offices has been crossed out with red tape by democracy activists on September 28.
Pro-democracy protesters gather near government headquarters on September 29.
Protesters gather during a demonstration outside the headquarters of the Legislative Counsel on September 28 as calls for Beijing to grant the city universal suffrage grow louder and more fractious.
Protesters tie up barricades on September 28 during a demonstration outside the headquarters of the Legislative Council in Hong Kong.
An injured protester is tended to after clashing with riot police outside Hong Kong government complex on Saturday, September 27.
Riot police use pepper spray on pro-democracy activists who forced their way into the Hong Kong government headquarters during a demonstration on September 27.
People watch from on high as pro-democracy demonstrators are surrounded by police after storming a courtyard outside Hong Kong's legislative headquarters on Friday, September 26.
Students march to Government House in Hong Kong on Thursday, September 25.
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Photos: Hong Kong unrest
Protesters demand democracy
Students: We want democracy
Pro-democracy protests in Hong Kong
But the protesters, rallying against what many see as the growing influence of the Chinese Communist Party on the way Hong Kong is run, are so far refusing to budge.
Both protesters and police have been calling for calm, Stevens said. And at the moment, the situation is peaceful.
Chanting protesters are calling for the resignation of Hong Kong Chief Executive C.Y. Leung.
A large orange banner hanging over them, Stevens reported, says "freedom in the midst of a storm."
Demonstrators say they're not going anywhere. Authorities also don't seem to show any sign of backing down; officials in Hong Kong and China say it's an illegal gathering.
"The next step really at this stage is very difficult to predict," Stevens said.
Leung said the organizer of Occupy Central said demonstrators would be asked to stop the protest if it gets out of control.
"I now urge them to call a stop to this," Leung said. "I respect how the public voice their political opinions, but I would like you to take care of the safety of the public."
Hong Kong protests: In the thick of it
What you need to know
Police action shocks residents
The protests have brought widespread disruption to the heart of one of Asia's biggest financial centers, blocking traffic on multi-lane roads and prompting the suspension of school classes.
On Tuesday, 37 branches or offices of 21 banks were closed, the Hong Kong Information Services Department said. It said ATM services were also disrupted in some areas.
Police say they've arrested 89 people since protests began, accusing them of forcible entry into government premises, disorderly conduct in public, assaulting police officers and obstructing police.
The large-scale demonstrations now taking place grew out of student-led boycotts and protests that began last week.
The demonstrations increased in size over the weekend after gaining the support of Occupy Central with Love and Peace, a protest group that was already planning to lead a campaign of civil disobedience later this week against the Chinese government's decision.
Images of heavy-handed treatment of protesters by police shocked many residents of Hong Kong, where large-scale, peaceful protests are common, but police crackdowns are not.
CNN's Ivan Watson -- who himself was enveloped in a cloud of stinging tear gas Sunday -- said protesters and police appeared unused to the method of crowd control.
"Both sides were appealing for calm, and then the tear gas just exploded in the midst of everybody," he said. "People here have never been hit by tear gas before, and it comes as quite a shock to them -- even the use of pepper spray. ... This is a big shock for a city that is famed for its law and order."
The strong police response appeared to stir thousands more people into joining the demonstrations, swelling the ranks of protesters around the government headquarters and starting new rallies in other key areas of the city, including the densely populated district of Kowloon, which sits on the opposite side of Victoria Harbor from Hong Kong Island.
"They shouldn't have used tear gas," said Brian Lo, 37, who works in human resources and wasn't protesting. "This made people angry."
As the sun rose over Hong Kong on Tuesday, Watson reported that groups of pro-democracy demonstrators were sleeping in the street after occupying the main highway in downtown Hong Kong for the second night in a row.
At the main protest site near the government headquarters, a young woman named Nikki told CNN she has no plans to leave.
"As long as there's one person that's still out here on this highway," she said, "I'm going to be here."
China faces 'most complicated' protests
Beijing watching Hong Kong events
'Umbrella revolution'
Despite the government's announcement that it had pulled riot police back from the protest sites, smaller numbers of officers remained on guard on the sidelines of the main protest area.
Aside from the clashes with police, the protesters have remained overwhelmingly peaceful. People have been picking up trash left at the protest sites, handing out bottles of water and encouraging police officers to put down their weapons and join the demonstrations.
In the face of tear gas and pepper spray, demonstrators have used goggles, homemade masks and umbrellas to protect themselves.
How Hong Kong remains distinct from China
The abundance of umbrellas among the crowds, shielding people from tear gas and the fierce glare of the sun, has prompted many social media users to dub the movement the "umbrella revolution."
Chan Kin-man, a leader of Occupy Central, told CNN's Christiane Amanpour that demanding the chief executive's resignation is a realistic goal that could give Hong Kong a window to restart constitutional reform efforts
"We shouldn't look at the democracy movement as a battle. It is a war," he said. "As long as the spirit of democracy is alive, we are not and we will not be defeated."
'We had to use force'
Fears nonetheless remain about the possibility of a heavier crackdown from authorities. Both the Chinese and Hong Kong governments have said they consider the protests to be unlawful.
Leung has said police have acted with the greatest possible restraint in dealing with the protesters. At least 12 police officers were among the injured, authorities said.
Hong Kong chief executive: Raw emotion 'will get us nowhere'
"We gave them enough of a chance to leave, and this included warnings," Assistant Police Commissioner Cheung Tak-keung said of protesters at a news conference Monday. "But when they failed, we had to use force."
Police fired a total of 87 tear gas canisters on Sunday night, he said.
In an indication authorities don't expect the demonstrations to end soon, the Hong Kong government said it was canceling the city's annual fireworks display on Wednesday, China's National Day, because of the protests.
"Everybody is in completely unknown territory. ... How these things end, we just don't know,' said Roderic White, an associate fellow at London-based Chatham House. "A lot will depend on the attitude of the authorities, and whether at some time there will be room for somebody to talk to somebody."
What will Beijing do?
Some analysts say they see little hope of compromise between the committed protesters and the Chinese Communist Party, which remains notorious for its ruthless suppression of pro-democracy protests in Beijing's Tiananmen Square in 1989.
"I see no way the Chinese government can tolerate what is happening in HK. Greatly fear this will end badly," tweeted Mike Chinoy, a senior fellow at the U.S.-China Institute at the University of Southern California, who covered the Tiananmen crackdown for CNN.
Pro-democracy activist and former legislator Martin Lee told CNN's Watson that China had troops stationed in Hong Kong who could clear the streets if ordered to.
"But Hong Kong people, I think, many of them would not be scared. I certainly would not be scared. And I've said it before and I say it again, if I see a tank from the Chinese troops in Hong Kong, I would get myself a bicycle and stand right in front of it," Lee said.
Chinese authorities appeared to be taking steps to restrict the flow of information into the mainland about what was happening in Hong Kong. State media gave little coverage to the story, and it appeared censors had blocked access to Instagram after images of the protests flooded the photo-sharing app.
Hua Chunying, a spokeswoman for the Chinese Ministry of Foreign Affairs, said Monday that Beijing fully believes in and firmly supports the Hong Kong government's "ability to handle the situation in accordance with the law."
CNN's Jethro Mullen reported and wrote from Hong Kong. CNN's Catherine E. Shoichet wrote from Atlanta. CNN's Esther Pang, Vivian Kam, Anjali Tsui, Simon Harrison, Euan McKirdy, Felicia Wong, Ivan Watson, Andrew Stevens, Chieu Luu, Elizabeth Joseph, David McKenzie, Steven Jiang, Katie Hunt, Steve Almasy and Hala Gorani contributed to this report.