Worcester (USA), 1936 - Solebury (USA), 1989

American social activist, writer, and politician, Hoffman was one of the founders of the International Youth Party ("Yippies"). Although it became important in the 1960s, Hoffman developed most of his militancy in the 1970s, and is considered a symbol of the youthful rebellion and radical activism of that decade. Before his days as leader of the Yippie movement, Hoffman was part of the Nonviolent Student Coordinating Committee, and organized a "Libertarian House," which sold items to support the Civil Rights Movement in the southern United States. He was arrested and tried for conspiracy and incitement to violence in protests that took place during the 1968 Democratic National Convention. He was a leading anti-Vietnam war activist. At the 1969 Woodstock Festival, Hoffman interrupted The Who's concert to give a protest speech against John Sinclair's imprisonment of the White Panther Party. In his autobiography he described himself as an anarchist.

Hoffman suffered from bipolar disorder and was found dead on April 12, 1989, at the age of 52. He had ingested about one hundred and fifty Phenobarbital pills combined with alcohol.