On October 1st, 1964, University of California student Jack Weinberg was arrested for distributing leaflets promoting civil rights on the Berkeley campus. Before a police car could take him away, 2,000 of Weinberg's fellow students surrounded the cruiser, sat down, and refused to move. The stand-off lasted for 32 hours and marked the beginning of the Free Speech Movement (FSM) which shaped the '60s generation.
Some time later, when officials appointed a young man to negotiate with the FSM, Weinberg famously remarked, "We don't trust anyone over 30." Though it had been largely intended as a joke, Weinberg's quip came back to haunt him -- when reporters tracked him down a few years later, on his 30th birthday.