Liberals can also be authoritarian. See reddit, where ideas that don't conform are typically downvoted out. Here too.
While your point (about the potential for liberal authoritarianism) is true, reddit is an example of partisan, not authoritarian, behavior.
> authoritarian
>downvoted out
Erm...
Pretty sure OP means liberal in the sense of "classical liberalism". Ideas like free market, rule of law, private property, etc.
I’m using the word liberal to mean things like liberty, individual rights, democracy, and the rule of law. That’s why I also mentioned hard left authoritarianism.
Also there’s a world of difference between people registering dislike on an online forum and the use of state power. It seems like a lot of people these days draw no distinction between removal from a private space or even people just showing disapproval and actual state force.