All the Celebrities Who Attended March for Our Lives 2018

So Senator Rubio, can you tell me right now that you will not accept a single donation from the NRA in the future? [APPLAUSE] So number one, the positions I hold on these issues are the Second Amendment. I've held since the say I entered office in the city of West Miami as an elected official. Number two, no, the answer to the question is that people buy into my agenda. And I do support the Second Amendment. And I also support the right of you and everyone here to be able to go to school and be safe. And I do support any law that would keep guns out of the hands of a deranged killer. And that's why I support the things that I have stood for and fought during my time there. No more more NRA money? More NRA money? In the name of 17 people you cannot ask the NRA to keep their money out of your campaign? I think in the name of 17 people I can pledge to you that i will support any law that will prevent a killer like this from getting a gun. No but I'm talking NRA money. No, no because- A matter of fact I bet we can get people in here to give you exactly as much money as the NRA would have. But it's not. But ultimately, look, the Frist Amendment is as important as the Second. And therefore you have every right to ask that question of me. And I'm here to tell you, I will stand for the things. I'll ask again are you gonna be accepting money from the NRA in the future? [APPLAUSE] I will always accept the help of anyone who agrees with my agenda.

After a mass shooting at Marjory Stoneman Douglas High School killed 17 people on Valentine's Day, there was a call for more gun control, and, on Saturday, those calls were actualized in the form of peaceful protest. Thousands participated in marches supporting gun control legislation in the March for Our Lives, lead by survivors of the Parkland shooting themselves.

The mission resonated with many celebrities, who turned out in demonstrations around the country to show support and call for reform. George and Amal Clooney were bundled up on the streets in Washington, D.C. to stand in solidarity with protestors, while Demi Lovato looked patriotic in a bright red coat and matching lipstick for her performance in the U.S. capital, singing "Skyscraper," which carried a meaningful message.

Meanwhile, Miley Cryus, her younger sister Noah, and Jimmy Fallon, posed together while holding up a MSD strong poster with a peace sign constructed from red and pink roses.

Other stars who showed up to march, included Paul McCartney, Glenn Close, Cher, Julianne Moore, Lin-Manuel Miranda, and Halsey.

Even before the March for Our Lives, everyone from Jennifer Lopez to Taylor Swift made their support clear.

That support was not just talk, though. Oprah, George, and Amal Clooney donated $500,000 to the cause to help organizers put the march together. In the days before it took place, George wrote a public letter in The Guardian to Parkland students.

RELATED: 5 Ways to Support March for Our Lives If You Can't Make It to the Actual Protest

"Amal and I are 100% behind you and will be marching in DC on the 24th, but we both feel very strongly that this is your march. Your moment. Young people are taking it to the adults and that has been your most effective tool," he wrote.

"The fact that no adults will speak on the stage in DC is a powerful message to the world that if we can’t do something about gun violence then you will. The issue is going to be this, anyone you ask would feel proud to be interviewed by you but it’s so much more effective if it’s young people."

He concluded the letter, "Amal and I stand behind you, in support of you, in gratitude to you. You make me proud of my country again."