[laretluval]

Tribalism has been around for the entire course of civilization, and has decreased over time since we got the idea that it's a bad thing. So if civilization seems like it's in trouble now then it seems unlikely that tribalism is the cause.

[Id15eba6u]

Tribalism is not a bad thing, neither is nationalism, it is only a problem when it turns sour. Just like everything else. It's horribly limiting to think in only black and white.