Yeah of them jumped a guy with a gun pointed at Mick Jagger, and stabbed him.
Who knows, he may have hit the lead singer of the Rolling Stones. Instead he is dead.
From what I remember they did a little more than that. I was a teenager at the time living in Livermore, had to sneak away from mom to go to the concert for awhile. There were a lot of HA. Many moons ago.