Kent State, May 4, 1970

Kent State students were protesting the expansion of the Vietnam War into Cambodia, and when the Ohio National Guard was called in with orders to disperse the students on campus, they also protested against their presence. The National Guard opened fire for just 13 seconds, killing four students and wounding nine. Allison Beth Krause, 19, Jeffrey Glenn Miller, 20, and Sandra Lee Scheuer, 20, died where they fell. William Knox Schroeder, 19, was taken to the hospital and pronounced dead there. The wounded students were Alan Canfora, John Cleary, Thomas Grace, Dean Kahler, Joseph Lewis, D. Scott MacKenzie, James Russell, Robert Stamps, and Douglas Wrentmore. Dean Kahler, who had been shot in the back, was left paralyzed from the chest down. One Guardsman was injured enough to require medical treatment. Sgt. Lawrence Shafer's bruised arm was placed in a sling and he was given pain medication.

In response, 4 million students across the United States protested, the largest student protest to that date.

The photo, taken by a photojournalism student John Filo, shows Mary Ann Vecchio, 14, screaming over the dead body of Jeffrey Miller, who had been shot in the mouth. Filo received a Pulitzer for the photo; he now is a photo editor at Newsweek.