Yeah it's tinfoil hat to think that leftists like to ban dissenting opinions, this thread isn't full of lots of people who agree with that approach or anything.
Yeah, because r/anarchism, a sub run by people who literally want to be executing people in the streets in the name of revolution, totally doesn't have far more extreme users who post far more extreme content all the time and get away with it.
They suggested that people attend a legally permitted protest march? Didn't they realise that only leftists have constitutional rights???!!!
And the idea that you get to say that because one mentally ill person who went to the march decided entirely alone to attack people, that every single person attending the march is guilty?
I bet you'd apply those standards to people marching for a cause you agree with, wouldn't you?