There's a book I read a few years ago named "Tribe: On Homecoming and Belonging" that delvs into this a bit and why humans are so tribal instinctively. Would highly recommend.
So interestingly enough I've seen all your other replies to my Firefish account except for this one. When I look at your profile within Firefish, I don't see this reply but do see the rest of them. Guessing it might be because of the embedded image?
Hello fellow lemm.ee user 👋