The decision to bring the Ohio National Guard onto the Kent State University campus was directly related to decisions regarding American involvement in the Vietnam War. Richard Nixon was elected president of the United States in 1968 based in part on his promise to bring an end to the war in Vietnam. During the first year of Nixon's presidency, America's involvement in the war appeared to be winding down. In late April of 1970, however, the United States invaded Cambodia and widened the Vietnam War. This decision was announced on national television and radio on April 30, l970 by President Nixon, who stated that the invasion of Cambodia was designed to attack the headquarters of the Viet Cong, which had been using Cambodian territory as a sanctuary.
Protests occurred the next day, Friday, May 1, across United States college campuses where anti-war sentiment ran high. At Kent State University, an anti-war rally was held at noon on the Commons, a large, grassy area in the middle of campus which had traditionally been the site for various types of rallies and demonstrations. Fiery speeches against the war and the Nixon administration were given, a copy of the Constitution was buried to symbolize the murder of the Constitution because Congress had never declared war, and another. . .
Today's Ohio Tragedy
Ahmet Ertegun, founder of Atlantic Records, helped CSNY release the record within 10 days of writing the song, when the tragedy was fresh in the minds of Americans.
Here he is with CSN in the mid-70s.
David Crosby on the creation of the song Ohio.