It's something you'll see in pretty much every disfavored group: people will attempt to push themselves up by pushing the others down. They'll say "I'm not like other X", reinforcing the idea that X actually does whatever bad things you imagine they do, and deserves to be looked down on.

They usually don't even recognize that that's what they're implying. They merely want to set themselves up as worthwhile and ask not to be pre-judged. But collectively, you get "crab mentality" (https://en.wikipedia.org/wiki/Crab_mentality).