@ai6yr I should note I attended college in 1969- 1973 (NOT 1960!) for undergraduate, and these years coincide with massive student-led protests over the Vietnam War. We prevailed. We also knew there would be photographs and documentation in government hands.
A good friend (college professor) filed and then waited 15 years for the FOIA files on him. He received 200 photocopy pages with many or most words blacked out, especially the names of agents or informants. We know from what he did receive, I’m in his files as well as many mutual friends. Many of the events were ACLU presentations or public meetings.
We also had proof a little old grumpy conservative lady (crank) who wrote a lot of letters to the editor of the local paper was an informant. Her name was accidentally not blacked out on one page and then we could deduce other events where she was the likely informant. “Violet Hamilton” always invokes my memories of the Wicked Witch in the Wizard of Oz. Years later we all remarked on notice of her death but had no regrets for her passing.
@MillerTimeGarage