I've been censored/shadowbanned in a couple .ml instances for calling out their overzealous comment-nuking mods. Not even political in nature, just seeing threads where 80-90% of the comments are 'removed by moderator' and commenting how suspicious it was.
Then they removed that comment, and after taking a screenshot of the new comment calling out that, I got shadowbanned and can't even vote there anymore.
Even the non political .ml communities are full of power-tripping, ban-happy, thread-nuking tyrants in my experience.