our innate "Us vs Them” pathology are some big ones.
You are correct about the innate part. This article explains how it works in laymen's terms. You're dangerously, insidiously, (with a touch of evil maliciousness) wrong about the pathological part and you have it backwards.

Governments are what is pathological, psychotic, and other forms of insane. I present the entirety of history as evidence. A cursory glance will indicate that governments are insane.