BRUSSELS, BELGIUM - SEPTEMBER 20: Young protesters hold up banners and chant during the third edition of the
BRUSSELS, BELGIUM - SEPTEMBER 20: Young protesters hold up banners and chant during the third edition of the 'Global Strike For Future' Belgium march to raise awareness for climate change on Friday 20 September 2019 in Brussels, Belgium. Millions of people join protests around the world today to mark the start of a week of global climate strikes, with activists calling on their Governments to urgently address the climate crisis. (Photo by Thierry Monasse/Getty Images)
PHOTO: Thierry Monasse/Getty Images Europe/Getty Images
Now playing
01:14
Children worldwide unite in global climate strike
PHOTO: Getty Images
Now playing
02:41
Alexey Navalny arrested on his return to Moscow
PHOTO: CNN
Now playing
01:47
John King: It's a horrific time to become president
A sign for the National Security Agency (NSA), US Cyber Command and Central Security Service, is seen near the visitor
A sign for the National Security Agency (NSA), US Cyber Command and Central Security Service, is seen near the visitor's entrance to the headquarters of the National Security Agency (NSA) after a shooting incident at the entrance in Fort Meade, Maryland, February 14, 2018. - Shots were fired early Wednesday at the ultra-secret National Security Agency, the US electronic spying agency outside Washington, leaving one person injured, officials said. Aerial footage of the scene from NBC News showed a black SUV with numerous bullet holes in its windshield crashed into concrete barriers at the main entrance to the NSA's headquarters in Fort Meade, Maryland. (Photo by SAUL LOEB / AFP) (Photo by SAUL LOEB/AFP via Getty Images)
PHOTO: Saul Loeb/AFP/Getty Images
Now playing
01:31
Christopher Miller orders NSA chief to install Trump loyalist as agency's top lawyer
PHOTO: CNN Weather
Now playing
02:41
US to rejoin the Paris Climate Accord on Bidens First Day
Now playing
02:38
Biden: Science team 'among the brightest, most dedicated'
Mike Pence remarks vpx
Mike Pence remarks vpx
PHOTO: Senate TV
Now playing
02:27
New timeline shows just how close rioters got to Pence and his family
MyPillow notes
MyPillow notes
PHOTO: Jabin Botsford
Now playing
02:21
Photographer snaps notes of MyPillow CEO after visiting Trump
PHOTO: CNN
Now playing
02:31
Teachers feel pressure as schools weigh in-person classes
PHOTO: CNN
Now playing
01:48
FBI warns of potential armed protests across country
Staffer White House move out
Staffer White House move out
PHOTO: CNN
Now playing
01:36
Moving trucks spotted at White House as staffers clean out their desks
southern california january strong winds low humidity fire conditions weather santa ana winds_00000000.png
southern california january strong winds low humidity fire conditions weather santa ana winds_00000000.png
Now playing
01:19
Fire weather prevalent across Southern California
PHOTO: CNN
Now playing
02:34
Blizzard, rain, and snow to hinder Central and Eastern US weekend weather
PHOTO: POOL
Now playing
00:48
Pence makes surprise visit to Capitol to thank National Guard
FBI Director Christopher Wray speaks during a virtual news conference at the Department of Justice on October 28, 2020 in Washington, DC.
FBI Director Christopher Wray speaks during a virtual news conference at the Department of Justice on October 28, 2020 in Washington, DC.
PHOTO: Sarah Silbiger/Getty Images
Now playing
03:47
FBI director speaks publicly for first time since Capitol riots
PHOTO: From Public Report / Jeremy Lee Quinn
Now playing
01:39
Video from inside Capitol raises questions for investigators
A man receives a dose of the Moderna coronavirus disease (COVID-19) vaccine at a vaccination site at South Bronx Educational Campus, in the Bronx New York on January 10, 2021. (Photo by Kena Betancur / AFP) (Photo by KENA BETANCUR/AFP via Getty Images)
A man receives a dose of the Moderna coronavirus disease (COVID-19) vaccine at a vaccination site at South Bronx Educational Campus, in the Bronx New York on January 10, 2021. (Photo by Kena Betancur / AFP) (Photo by KENA BETANCUR/AFP via Getty Images)
PHOTO: KENA BETANCUR/AFP/Getty Images
Now playing
02:25
Coronavirus cases surge as states struggle to vaccinate
(CNN) —  

Climate change activists shut down traffic in the nation’s capital Monday, blocking key intersections across Washington, DC, to bring attention to their cause.

The #ShutdownDC action was part of the global climate strikes young activists have been leading since Friday, to spur government action on the climate crisis.

Meanwhile, in New York, the UN was planning to host its Climate Action Summit on Monday. Secretary-General António Guterres challenged world leaders to share “concrete, realistic plans” to reduce greenhouse gas emissions.

In Washington, reporter Sam Sweeney of CNN affiliate WJLA tweeted that traffic was gridlocked in the morning and police had made some arrests.

Protesters blocked 16th Street Northwest at K Street Northwest. They secured themselves to a boat in the middle of the intersection and were being removed by police a couple of blocks from the White House.

A climate change activist group, Extinction Rebellion Washington DC, posted a video on Twitter.

“WE WANT CLIMATE JUSTICE NOW!!” the group wrote.

The group then marched up Connecticut Avenue toward DuPont Circle.

Others sat in a crosswalk at Independence Avenue Southwest and 14th Street, tweeted WJLA’s Kristen Powers.

“Activists say this is the only way to gain attention of lawmakers,” she wrote.

In addition to shutting down traffic, the activists urged people to strike, too.

“We will block key infrastructure to stop business-as-usual, bringing the whole city to a gridlocked standstill,” the activists write on the website strikedc.org. “Parents, workers, college students, and everyone who is concerned about the climate crisis will skip work and school and put off their other responsibilities to take action on the climate crisis.”

The activists also want people to sign a “Pledge of Resistance” that, along with promising to strike and try to shut down traffic, also requires people to ask their friends and family to participate.

Here’s how the government will handle this

Washington’s Homeland Security and Emergency Management Agency said it was aware of plans to intentionally disrupt traffic and would activate DC’s Emergency Operations Center to coordinate the city’s response.

Some environmental activists are arrested as they protest Monday in Washington.
Some environmental activists are arrested as they protest Monday in Washington.
PHOTO: Brendan Smialowski/AFP/Getty Images

“Although we are unaware of specific locations that will be impacted, there is the potential for traffic delays and disruptions throughout the District,” a post on the management agency’s website said.

Commuters were urged to take public transportation, plan alternate routes, sign up for free text or email alerts on traffic and report suspicious activity to the police.