This week’s reading: Altamont: The Rolling Stones, the Hells Angels, and the Inside Story of Rock’s Darkest Day. It tells the story of how a bunch of hippies and hustlers convinced the Stones to hire the Hell’s Angels to provide security for a free concert in the middle of nowhere.

For further consideration: Albert and David Maysles’ documentary Gimme Shelter, which begins with their Madison Square Garden show and ends with footage shot from the stage and in the crowd.