This will go down as one of the most powerful moments of student-led demonstration against gun violence in America.
One of the most powerful moments of Saturday's March For Our Lives protest in Washington, D.C. didn't come from a celebrity speaker or a performer -- it came from a student with a simple request to sing her friend "Happy Birthday."
The crowd was moved to tears as Marjory Stoneman Douglas High School shooting survivor Sam Fuentes led thousands in singing the familiar tune for her classmate, Nicholas Dworet, who was one of 17 students killed during February's mass shooting at the Parkland, Florida, high school.
Today, March 24, would have been his 18th birthday.
"I have one more request," Fuentes said while making a speech at the podium. "Today is March 24th, March For Our Lives, but it is also the birthday of Nick Dworet -- someone that was senselessly murdered in front of me. Today is his birthday. I would like to sing altogether 'Happy Birthday.'"
Kim Kardashian, husband Kanye West and daughter North West are among those in the crowd pleading for an end to gun violence. Stars including Miley Cyrus, Common, Demi Lovato, Lin-Manuel Miranda, Ariana Grande and Jennifer Hudson are also set to perform at today's D.C. rally.
Watch the moving video below. And good luck holding back those tears! We sure couldn't.