March For Our Lives: What you need to know

WASHINGTON - More than 500,000 protesters are expected to descend on Washington D.C. on March 24 as part of the March For Our Lives, a march organized by students from Marjory Stoneman Douglas High School, which was the site of a deadly mass shooting in February.

In addition to the main march in Washington, event organizers have also created or endorsed nearly 500 satellite marches that will take place on that Saturday. Overall, the marches across the country could rival 2017's Women's March in size.

The organizers of the event say their mission is simple: "To demand that a comprehensive and effective bill be immediately brought before Congress to address these gun issues."

The march was originally scheduled to take place at the National Mall, but a group for an unrelated event already had a permit, so the march will be held nearby.

Though students from Parkland, Florida and around the country are leading the movement, celebrities like Oprah Winfrey, George and Amal Clooney, and Steven Spielberg have donated money to support the event. Stars like Justin Bieber and Harry styles have also encouraged students to participate as well.

Whether or not Congress will be moved to act is uncertain, but one thing is clear: the Marjory Stoneman Douglas students behind the march are determined to be a force to end gun violence once and for all.