CSNY - Ohio

"On May 21, 1970, Crosby, Stills, Nash & Young released the protest single Ohio, written and composed by Neil Young in reaction to the Kent State shootings of May 4, 1970, when unarmed college students were shot by the Ohio National Guard. The guardsmen fired 67 rounds over a period of 13 seconds, killing four students and wounding nine others, one of whom suffered permanent paralysis."