Yeah, just recently I rewatched Apocalypse Now. And I've never been to the U.S. or Vietnam. I agree, this is pretty much alive in cultural memory, not forgotten.

I believe we (as in, people) all have a responsibility to hold each other accountable. But we can also only do so much, and inserting yourself into a toxic community ...

Me too, both. That we have responsibility for others and that we are not obliged to put ourselves at harms risk.

But this is a particularly shitty, maybe wicked problem. There are three groups: A bullies B, and C could stop A, but isn't bothered by anyone. Now, is C obliged to pick a fight with A, or is B just in bad luck to be born as a B?

I think here, it is very easy to have strong opinions, while very hard to formulate a concise moral argument. Things get muddier/harder the more we factor reality in.