Well when I was first choosing a lemmy instance to call home I looked into lemmygrad. The sign up message basically said Marxist Lennists and friends only don't like those don't join. Which if you pardon the pun is a red flag.

Then I read some posts and basically anything not Marxist Lenninst or Socialism with Chineese characeristics was basically called evil and shunned. Every post I read was just so hostile to any thought even slightly different to theirs. Being called a CIA asset in a posted article was an interesting one I must say.