Mine happened when i first made a reddit account, i got banned from a subreddit with a tankie moderator because i questioned the logic of having lenin as the subreddits profile, for a subreddit devoted to anti conservative memes.
On lemmy.ml/c/worldnews, the second comment / chain of comments I ever made on Lemmy. I had no idea that there would be so many Putin supporters. I was downvoted to hell for saying that the war in Ukraine is Putin's war and it can end whenever he decides to get the fuck out.
same, i assumed lemmy.ml was normal, but NOPE, its fucking insane, though i should have assumed it would be from its name, i just never thought about what ml stood for.
Lemmy.ml is a stain on the fediverse. As much as Dessalines and Nutomic preach that "if you don't like our moderation policy you can start your own instance," lemmy.ml's dominant position means it's hard to realistically defederate and ignore, so by default their (unclear and tankie belief-based) moderation policy is effectively getting enforced no matter what.
I tried using the "block instance" feature kbin supposedly has, but it didn't work. On the upside, lemmy.world, kbin.social, and beehaw.org seem to be doing quite well.