According to a Reuters story, the BBC is saying that Mick Jagger was under threat of associational following Altamont in 1969:
Rolling Stones frontman Mick Jagger only survived an assassination attempt by Hells Angels members nearly 40 years ago because a boat carrying his would-be killers was swamped in a storm, according to a new BBC documentary.
This would have been shortly after RFK and MLK were murdered and in the midst of the general tumult of 1969. While not a political figure nor as revered as John Lennon, the loss of Jagger in 1969 would have been shocking.
The article provides some additional background on the attempted assassination:
The Stones had hired the local chapter to provide security for the poorly planned concert near San Francisco. The bikers terrorized the crowd, and were offended by Jagger's effeminate dancing. One of them stabbed 18-year-old Meredith Hunter to death in front of the stage. The chaos was immortalized in the documentary "Gimme Shelter."
The Hells Angels felt they had been duped by Jagger as fingers were pointed in the aftermath of the concert. Former special agent Mark Young, who was interviewed for the BBC series, said a boatload of Hells Angels set out to take revenge on Jagger at his holiday home in the Hamptons, near New York City.
Apparently, bad weather saved Jagger:
"They planned the attack from the sea so they could enter his property from the garden and avoid security at the front. The boat was hit by a storm and all of the men were thrown overboard. All survived and there was not said to have been any further attempt on Jagger's life."
Who knows if this story is true. Even if was true it may have been nothing more than a bunch of bikers getting a major buzz on and deciding to do something dumb on the spur of the moment. The only ting I do know is that Iraq would have been a lot better off if we had sent the Hells Angels over there instead of Blackwater. Of course had we sent rock n' roll music instead of aremd soldiers things would really have turned out differently.