Personally not dating back that far lolz, but I would guess this kind of counterculture stuff was tolerated earlier in France and some parts of Germany than in the US. Then analogous groups became established in US and brought in and tried to normalize pot (the real reason it was banned, not “racism”) worked to cleave youths away into the first generational gap in the US with beatnik culture carefully designed for that purpose. The leaders of this were primarily homosexuals and pedophiles.
Yes, if you ever saw Paris in 1968 (I called them the ‘Soixante-Retards’), the students there made ours look like Goldwater Republicans.