A free concert took place in northern California in December of 1969 featuring The Rolling Stones. It would descend into chaos due to poor planning, rampant drug use and the ill-advised use of the Hells Angels as concert security.
Joel Selvin, Altamont: The Rolling Stones, the Hells Angels and the Inside Story of Rock's Darkest Day
, (New York: Harper Collins), 2016.
Lester Bangs, Reny Brown, John Burks, Sammy Egan, Michael Goodwin, Geoffrey Link, Greil Marcus, John Morthland, Eugene Schoenfeld, Patrick Thomas, and Langdon Winner, Rolling Stone Magazine
, "The Rolling Stones Disaster at Altamont: Let It Bleed," January 21, 1970.
Albert & David Maysles and Charlotte Zwerin, Gimme Shelter
Note: Meredith Hunter can be seen in the crowd at timestamp 1:18:50. The attack on him begins at 1:23:26.