The very people, who screamed "DON'T TRUST ANYONE OVER 30!", were all very deeply into their 30s and a few were in their 40s! RED DIAPER BABIES, all, expect two that I can think of off hand.
Right, the generation born before 1946.
I think most of the Silent Generation hippies of the 60s that most people remember were in their 20s.
Here are a few and most, if not all, were in their 20s.
Bob Seger, Jane Fonda, John Denver, Jim Morrison, Jimi Hendrix, Peter Paul & Mary, Grace Slick, Neil Young, Beatles, Van Morrison, Joan Baez, Jerry Garcia, Pete Townsend, Joe Cocker, Judy Collins, Jimmy Page, Janis Joplin, Bob Dylan, Williams Ayers, Bernadette Dohrn, Chicago Seven, Rod Stewart, Abbie Hoffman, Hunter S. Thompson, Charles Manson, Brian Wilson, The Beatles, and the Rolling Stones, the Jefferson Airplane, and the Mamas and the Papas, Jimmy Page, Crosby, Stills, Nash, and Young, etc,
I - as a Gen Xer - used to have a lot of fun telling my leftist Boomer College Profs that I “didn’t trust anyone over 30” (always said with a big shit eating grin).
They didn’t like that taste of their own medicine very much. LOL!