Back in the 60s, being subject to military conscription (the draft) made "protest" extremely personal for huge numbers of young men in the US. Factor in the girlfriends, siblings and (sometimes) parents of guys who could be involuntarily inserted into a kill-or-be-killed situation, and you had a critical mass of highly concerned people.

However screwed up and and dangerous the current world situation might seem to you or me or some hypothetical young person, the same life-or-death immediacy (**MY** life or death, that is) just isn't there.