|Tribalism, or the tendency for humans to break off into groups to which they're extremely loyal, makes sense and has been shown to be evolutionarily beneficial. Tribalism tends to lead to pride in one's tribe. I think it's weird when the tribe you're a part of was an accident of your birth, like race or ethnicity. White pride? Why are you proud of something you literally had no control over? Proud to be an American? Why, when you had no choice in the matter? You haven't done anything to be proud of, aside from being born to parents of a certain race and in a specific location. That's just genetics and geography.
I think this matter extends a little further to religion. Religious affiliation is largely dependent on the religious affiliation of your parents and/or your community. Claiming pride in one's religion, or espousing its virtues above other religions, is ignoring the coincidental nature of essentially being assigned a religion at birth.
Finally there's the topic of sports fandom. This is almost entirely dependent on geography, and it's even memorialized in a song with the words "Root, root, root for the home team". It's morbidly fascinating to watch people get into physical fights because they believe the team from their geographical area is superior to a team from a different geographical area. #sociology