It was 52 years ago today (December 6th, 1969) that the Rolling Stones held their ill-fated free concert at the Altamont Speedway in Livermore, California. The bill, which also included Santana, the Jefferson Airplane, the Flying Burrito Brothers, and Crosby, Stills, Nash & Young, is mainly remembered for the violence instigated by the Hells Angels motorcycle gang, whom the Stones had hired as security and the murder of concert-goer Meredith Hunter by Hells Angel Alan Passaro. Passaro was later acquitted of the stabbing after claiming he acted in self-defense. The Stones' Madison Square Garden shows and the Altamont event were filmed by filmmakers Albert Maysles, David Maysles, Charlotte Zwerin, and assisted by George Lucas, among others. The film was released in 1970 as Gimme Shelter. At the New York City press conference on November 26th, 1969, Mick Jagger said he thought that the free Northern California concert would follow in the footsteps of the Woodstock festival,