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BROWNSVILLE, TX - JUNE 22: A crying Honduran woman and her child wait along the border bridge after being denied into the Texas city of Brownsville which has become dependent on the daily crossing into and out of Mexico on June 22, 2018 in Brownsville, Texas. Immigration has once again been put in the spotlight as Democrats and Republicans spar over the detention of children and families seeking asylum at the border. Before President Donald Trump signed an executive order Wednesday that halts the practice of separating families who were seeking asylum, over 2,300 immigrant children had been separated from their parents in the zero-tolerance policy for border crossers. (Photo by Spencer Platt/Getty Images)
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(CNN) —  

Hundreds of thousands of defiant and determined protesters gathered nationwide, their resounding pleas to keep families together echoing from coast to coast.

In major cities and small towns, crowds rallied against President Donald Trump’s immigration policy. Galvanized by images of migrant children separated from their parents at the US southern border, they carried signs, chanted and called for an end to family separations.

They demanded the government quickly reunite families, their calls repeated from Washington to Los Angeles, to Chicago, Atlanta, Milwaukee, San Francisco and beyond.

Here are the top moments from the marches:

Broadway comes to Washington

03:10 - Source: CNN
Lin-Manuel Miranda sings for separated families

The creator of the hit musical “Hamilton” dedicated a song to parents who are separated from their children.

“We’re here because there’s parents right now who can’t sing lullabies to their kids,” Lin-Manuel Miranda told the crowd in the nation’s capital. “We’re not going to stop until they can sing to their kids again.”

With that, he launched into “Dear Theodosia,” which tells the story of parents trying to make a better world for their children. In the musical, the lullaby is sung by two of America’s founding fathers, Alexander Hamilton and Aaron Burr.

Maxine Waters scolds the President

02:10 - Source: CNN
Rep. Waters to Trump: How dare you

US Rep. Maxine Waters spoke directly to the President about his immigration policies. And she was angry.

“How dare you?” Waters, a Democrat from California, said at the Los Angeles rally. “How dare you take the babies from mothers’ arms? How dare you take the children and send them all across the country into so-called detention centers? Donald Trump, you think you can get away with everything, but you have gone too far when you are trying to break up families in the way that you do.”

Protesters head to the White House

Thousands marched across the Brooklyn Bridge in New York City.
Spencer Platt/Getty Images
Thousands marched across the Brooklyn Bridge in New York City.

Protesters marched by the White House in Washington, as well as the Trump International Hotel on Pennsylvania Avenue. They yelled, “shame, shame, shame” and “Hey, hey, ho, ho, Donald trump has got to go.” In New York City, thousands marched across the Brooklyn Bridge and massed outside Trump Tower to chant and wave signs.

But President Trump was not in either place.

Trump and his family stayed at Trump National Golf Club in New Jersey for the weekend. Protesters followed, of course, but they only got as close as downtown Bedminster, New Jersey, about 4 miles from the golf club.

Fire departments help cool protesters

A girl takes part in a protest against the US  immigration policies separating migrant families in Chicago.
Jim Young/AFP/Getty Images
A girl takes part in a protest against the US immigration policies separating migrant families in Chicago.

It was blistering hot in some parts of the nation, with daytime temperatures hovering close to 90s and organizers urging crowds to drink water.

The protesters on the streets of Chicago found relief when the fire department sprayed them with water on the street.

Firetrucks sprayed water on the crowds in Washington, too, where two people were taken to a hospital for heat emergencies, DC Fire and EMS said.

Calls to abolish ICE ring out

00:58 - Source: CNN
Elizabeth Warren: US immigration a moral crisis

US Sen. Elizabeth Warren joined the chorus of Democrats calling for US Immigration and Customs Enforcement to be replaced.

“The President’s deeply immoral actions have made it obvious – we need to rebuild our immigration system from top to bottom, starting by replacing ICE with something that reflects our morality and that works,” Warren said at a rally in Boston.

Rep. Joe Kennedy III, a Democrat from Massachusetts, also addressed the Boston crowd.

“We stand up and we say: Not on our watch. Not while we have something to say about it,” he said.

12-year-old makes impassioned plea

05:01 - Source: CNN
12-year-old gives powerful speech

A child stole the show in Washington.

Leah, 12, the daughter of undocumented immigrant parents, took the stage and told the crowd about the her daily fear as the daughter of undocumented immigrants. Leah said she wants to be a role model for other children like her and the children who were separated from their families at the border.

“I don’t like to live with this fear. It’s scary. I can’t sleep. I can’t study. I am stressed,” she said. “I am afraid that they will take my mom away while she is at work, out driving or at home.”

John Legend has a message and a song

John Legend performs  for thousands  at the rally in Los Angeles.
FREDERIC J. BROWN/AFP/Getty Images
John Legend performs for thousands at the rally in Los Angeles.

Singer John Legend had a passionate message for people at the rally in Los Angeles.

“I think some of us have a strong temptation to just disengage, but we can’t. We can’t do that. I can’t do that. I have to do something.”

He also had a musical gift. Legend sat down at a piano and played a new song, “Preach,” which he said “feels right for this moment.”

Legend was introduced by his wife, Chrissy Teigen, who was holding their infant son. Legend was one of several celebrities who attended the marches nationwide.

Grandfather’s heartbreaking letter read at rally

02:46 - Source: CNN
Ferrera: This fight belongs to all of us

In Washington, actress America Ferrera read a letter from a Salvadoran grandfather who lives in Oakland, California. He is separated from his granddaughter, who is being held in Manvel, Texas.

He wants her to come live with him, and was visited by a home investigator.

“I got the impression the investigator thought I didn’t make enough money,” the letter said. “I know I don’t make enough money, but I make enough to care for (you). Everything I have I will give to you.”

Singer Alicia Keys read an affidavit from a woman who wanted to know why her son was still detained at a facility in Oregon. Keys brought her 7-year-old son, Egypt.

“I couldn’t even imagine not being able to find him,” Keys said about her son. “I couldn’t imagine being separated from him or scared about how he is being treated. So this is all of our fight. Because if it can happen to any child, it can happen to my child and your child and all of our children.”

First-timers travel hundreds of miles to protest

Crowds protest the Trump administration's approach to illegal border crossings and separation of children from immigrant parents in  Washington.
Alex Brandon/AP
Crowds protest the Trump administration's approach to illegal border crossings and separation of children from immigrant parents in Washington.

Two women from Fayetteville, North Carolina, traveled to Washington. They both said this was their first protest.

“Separating a child from a parent – as a parent – is the most inhumane thing ever,” said Allison Thompson, who said she’s a Republican and the mother of two kids. “There is just nothing worse to me.”

Carrie Amabile carried a sign that said “Love thy neighbor.”

“I shared with my daughters a video of the children’s detention centers and we cried,” Amabile said.

Atlanta protesters carry dolls in crates

00:58 - Source: CNN
Protesters carry a dog crate with baby dolls inside

In Atlanta, protesters carried a dog crate with baby dolls inside it, an apparent reference to the chain-link fences some migrants – including children – have been kept behind. During the protests, US Rep. John Lewis and others criticized the Trump administration for separating children. “We must teach people in power that we will not be satisfied with the order of things,” Lewis said.

CNN’s Faith Karimi, Jay Croft, Dakin Andone, Ray Sanchez and Catherine Shoichet contributed to this report.