Shantideva says a lot about our mindset. The mindset of friend and foe. Like and dislike. For me and against me. And how that very mechanism of buying so tightly into this notion of the good people and the bad people—the ones that I like and the ones I don't like—and how we get so invested in this and how this is "the kindling" or "the fuel" for anger and aggression to escalate.
Don't Bite the Hook
by Pema Chödrön.