Amy Schumer, Connie Britton, Olivia Wilde, Skai Jackson and Yara Shahidi are among the speakers set to take the stage at the Los Angeles March For Our Lives rally Saturday, with singer-songwriter Charlie Puth among the musical performers slated.

The actors will share the stage with students from Marjory Stoneman Douglas High School, site of the February 14 shooting in Parkland, Florida. Other speakers and performers will include Denver Choir, Lara Downes, Ta’Rhonda Jones, Cappie Pondexter, Bret Lockett, Hasan Piker, Jacob Sartorius, Mason Cook, Meg Donnelly, Sierra Dupri. Trevor Hall will be providing a video of the song “Angel Rays” in honor of the 17 victims, and L.A. mayor Eric Garcetti will make the opening remarks.

Scheduled to begin at 9 am, the L.A. march is one of more than 800 currently being planned in solidarity with Saturday’s national March For Our Lives in Washington, D.C. The student-led campaign against gun violence and school shootings is designed to “call on lawmakers to prioritize the lives of young people nationwide.”

The main march in Washington, D.C. kicks off at 10 AM ET, along Pennsylvania Ave NW from 3rd Street NW to 12th Street NW. The stage, located at 3rd and Constitution Streets, NW, will serve as the hub for the day’s program which will begin at noon ET, with speakers including the Parkland students who launched the event. Musical performances will come from Common, Miley CyrusAndra DayAriana GrandeJennifer HudsonDemi Lovato and Vic Mensa others.

The New York march and rally is set for 11 AM ET at the corner of West 72nd Street and Central Park West, making its way to and down Sixth Avenue to 43rd Street.

Counting L.A., Washington D.C. and New York City, marches and rallies are being planned in 836 locations worldwide, including Boston, Chicago, San Francisco, Liverpool and Reykjavik, to name a few, according to The March For Our Lives website.

Courtesy March For Our Lives

The Downtown L.A. march will convene on the corner of 6th Avenue and Spring Street, proceeding to Los Angeles City Hall and Grand Park for the rally, where students, teachers, community leaders, and artists will speak “to honor the 17 lives tragically claimed in Parkland, Florida on February 14, 2018 and to demand immediate action on gun violence prevention.”

“We are witnessing our generation, actively come together, in a global conversation, demanding action from lawmakers to invest in and assure our right to safety,” said Grown-ish star Yara Shahidi. “I am inspired and motivated to continue to contribute through action, and am honored to be joining March For Our Lives, in Los Angeles this Saturday, to stand in solidarity with my peers from across the country, to demand an end to the gun violence plaguing our schools and our communities, once and for all.”

The event has received financial donations of at least $500,000 from George and Amal Clooney, Steven Spielberg and Kate Capshaw, Jeffrey Katzenberg and Oprah Winfrey.

Here’s a sampling of other celebrities tweeting their support: