Section 4 describes how racism (or tribalism or whatever you want to call it) is really natural and healthy, with no references except your own "common sense".
> Now imagine growing up and looking forward to playing on the same football team as your elders in front a cheering hometown crowd. And then that dream is taken away from you by some unelected judge. At his order, another tribe invades, takes your spot on the football team and dates the girl you were wooing. You are not going to like that very much. You might want to join with your tribal brothers and brawl with this opposing tribe in the lunch room. And of course the other tribe is going to fight back.
What the fuck? Why would I want to fight people for being better at football than me? Why would I start a race war because some guy with different skin than me is dating a girl I like? How can you possibly see this as acceptable? You can argue that it's natural, but natural doesn't mean good.
Do you understand that not everybody thinks like this? If a black guy gets promoted over me, I don't get angry at the black tribe for invading my homeland. That line of thinking is, as you say, cartoonishly racist.
And then in your conclusion, you correctly identify racial disparities, and then sort of argue that's the way it should be. The fact that black people do worse than white people in school is a problem worth solving, not a convenient method of grouping students, right? The only way this status quo could be acceptable is if you think black kids are genetically predisposed to be less intelligent. Your article on racism does bring that up, but I can't tell if it's a belief you hold. If you do believe that, you should be more clear about it in this school segregation article, otherwise your conclusions don't make sense.