[maldusiecle]

Marxism is not the same as Stalinism or Maoism, and is not necessarily an authoritarian belief system. Fascism is by definition authoritarian. I don't know how you define "left-wing authoritarianism," but the fact that you treat participating in a protest as some extreme point of it suggests to me that you don't know much at all.

Edit: If you think destroying property is necessarily authoritarian, once again, you don't know what that word means.

Edit 2 (seriously, this is the way you want to have a discussion?): going on and on about "gaslighting" and "cognitive biases" isn't make you look any better. I've known a number of people who toy with soviet chic without actually condoning the actions of the USSR; it's not a surprising in a country where the mildest trade unionism is equated with Full Communism by a large part of the population. I don't like it, but I know enough to know that most of the people flying it aren't Stalinists (or Maoists) by any stretch of the imagination.