The Altamont Free Concert (Relative Disasters Episode 140)

It was intended to be "Woodstock West", a celebration of music in a free concert in California. It was intended to have a fun lineup of some of the biggest rock bands on 1969, headlined by The Rolling Stones.

It ended with four people dead, hundreds injured, and is often pointed to as the death of the 1960s peace & love / counter-culture movements.