Many US 60s hippy musicians came from high-ranking US military intelligence families in Laurel Canyon, including The Byrds, Frank Zappa, Jim Morrison, the Buffalo Springfield, the mammas & the pappas, the eagles, the monkeys, Crosby, Stills & Nash, Joni Mitchell.
https://groovyhistory.com/laurel-can...-star-1970s/11
The conspiracy goes that this was a deliberate, and very successful, effort by military intelligence to derail the clean-cut, shirt-and-tie anti-war movement into a bunch of narcissistic, drug-addicted, sex-obsessed morons.