Seventeen people were shot to death and many others wounded Wednesday at Marjory Stoneman Douglas High School in Parkland, Florida, in a horrific episode of school violence that ended with the arrest of a former student. Panicked parents streamed to this affluent section of northwest Broward County, as news helicopters broadcast the incident live, police officers crouched behind cars with guns drawn and students congregated on streets, many crying, hugging and calling friends and family.

In a blurry Snapchat video from inside the school, a man yelled, “Oh, my God,” as the pop-pop, pop-pop of gunshots rang out and students screamed. Broward Sheriff Scott Israel said 17 people were killed, including both students and adults, with two shot outside the school, one in the street, 12 inside the school and two dying from their wounds at the hospital. READ MORE