Comment by lupusreal

I think one of the distinguishing characteristics of tribalism is the inability to have low-stakes conversations about politics. To somebody who is deep in tribalism, every private ephemeral one-to-one conversation they have is a vital battle which very well may decide the fate of the world, so their vigilance and inflamed passion entirely justified and rational. Being a part of the tribe ruins their humility, the tribe is important, they are wed to the tribe, any political discussion they have is on behave of the tribe, and therefore very important. Alliance with the tribe confers importance to themselves and they thereby lose their humility. They lose the ability to recognize that the conversation isn't actually important, that they can relax and treat the other person like a human rather than a faceless representative of the enemy who they have a vital responsibility to defeat.