Video: 'Vietnam: A Television History - Homefront USA [10/11]' (Cambodia Campaign at 45:43)

(Saturday, May 2, 1970, firefighters arrived shortly after 8:45 p.m. EDT; during the Cambodian Campaign, part of the Vietnam War, Cambodian Civil War, Indochina Wars and the Cold War) — A group of 600 protesters opposed to President Richard Nixon’s decision to send U.S. troops into Cambodia set fire to the Reserve Officers’ Training Corps (ROTC) building on the Kent State University (KSU) campus tonight in Kent, Ohio.

Video: 'Our World Spring 1970 Part 1' (ROTC fire at 7:58)

Disturbances earlier in the day had prompted Kent Mayor LeRoy Satrom to ask for the Ohio National Guard. The first of 400 guardsmen dispatched from nearby Akron arrived at around 10:00 p.m. EDT.