You make a number of great observations. There is an American-centric bias among these three philosophers, an issue I hope to address in regard to the philosophers of race in Part 2.

Whether it is called "xenophobia" or "fear of the other," there is a larger cause of human prejudice that transcends American white racism against Blacks. I agree with you that there is a difficulty in trying to understand the other person and their viewpoints. That, though, is the path to overcoming so many problems. I wrote about that: https://medium.com/age-of-awareness/lets-call-racism-what-it-is-structural-cowardice-bb3fca62886a.

On victimhood, yes that is also a difficult issue. I will reserve comment for now.