Walkouts, Marches and Rallies: A Guide to the School Violence Protests After the Florida Shootings

The shooting at Marjory Stoneman Douglas High School in Parkland, Florida last week left 17 students and staff dead — and replaced the 1999 Columbine High School massacre as the deadliest high school shooting in America. Many of the survivors, thousand of teenagers who used social media to document to horror, aren't waiting for the adults to make changes to prevent the next school shooting.