They also beat up Marty Balin the singer for the Jefferson Airplane. It was a disaster. “Flower Power” was dead. If I watch any of those festivals now, it’s Monterrey. Interesting that The Beatles didn’t play at ANY of those concerts during that period. Lennon played one in Toronto that wasn’t too bad except he let Yoko sing......
The Beatles wanted to attend the Toronto rock and roll festival to WATCH the older acts like Chuck Berry and Little Richard and Jerry Lee Lewis but Kim Fowley convinced the promoter to GET one of the Beatles.
And yeah, the Beatles never played one of these festivals. The Rolling Stones barely did. The Who were a substitution when Brian Wilson and the Beach Boys cancelled on Monterey Pop.
The Doors DID play these type of festivals, as did Led Zepplin, and a bunch of bands with more cred that Country Joe and the Fish.
And part of the reason for the crowd gathering in the park in Chicago in 1968 was the word was out that the Beatles or the Stones were going to play. In the end, it was the MC5 from Detroit, and there was no power (so they had to use the generator from a hot dog vendor’s wagon).