On this date in 1970, four Kent State University students were shot dead and nine wounded in Kent, Ohio, by the National Guard during a protest against the Vietnam War and the newly revealed U.S. invasion of Cambodia by the Nixon government.

The four martyrs were Allison Krause, 19 years old; Sandra Lee Scheuer, 20; Jeffrey Glenn Miller, 20; and William K. Schroeder 19. (From People’s World)