Hundreds of thousands of people around the world are taking part in March for Our Lives demonstrations, calling for an end to gun violence. The protests were sparked by a string of deadly school shootings, including the massacre in Parkland, Fla., last month. Organizers say they expected nearly a million people in Washington, D.C., alone, and celebrities such as Kim Kardashian, Kanye West, Paul McCartney, Arianna Grande and Cher were there. Click through for highlights.
See the Yahoo News live blog of today's events here.