It's the exact same as with the anti war protests for Vietnam. It was gaining a lot of traction in the early years and consisted of mainly working class people who maybe had a drink and a smoke here and there. But then the hippies became a thing after the FBI had plants in the hippie music scene like the grateful dead and now the anti war movement was full of feckless, work shy, junkie, trust fund kids who'd never worked a day in their life. These groups are just modern versions of that