WTF ? My subbredits certainly are - but there is also conservative xenophobia aplenty if that is your thing !
Or subreddits like /r/worldnews, which are basically left-wing xenophobia echo chambers.
I'd actually argue that most larger subreddits are like that as well (strongly left wing, with a bent of xenophobia), just less explicitly.
WTF ? My subbredits certainly are - but there is also conservative xenophobia aplenty if that is your thing !