Really interesting podcast about the repeated use of Hell's Angels as "security" by counterculture bands in the 60's ... Who constantly misinterpreted them as sort of "gentle rogues" rather than violent criminals.

Tim Harford
Cautionary Tales – The Angels, the Stones, and the Dead
In the final days of the Sixties, The Rolling Stones join forces with other rock legends to plan a free concert at Altamont that will rival Woodsto...