Students After Shootings At Kent States

In the aftermath of the Ohio National Guard having opened fire on a student antiwar demonstration at Kent State University campus, unidentified students sit on the grass, Kent, Ohio, May 4, 1970. The protests, initially over the US invasion of Cambodia, resulted in the deaths of four protesters (and the injuries of nine others) after the National Guard opened fire on students. (Photo by Howard Ruffner/Getty Images)