Affirmative action is sins of they father by another name. It's judging people, and sending the message that it is okay--even righteous--to judge people not on who they are, but on from whom they are born.
It also creates justified racial animus between ethnic groups anew, and does so in a motivating way: by harming, or even just creating the perception of harming, their children.
> Why would you want to make education more elite?
Because we're defining an elite based on a mangled construction, where the kids of an Angolan dictator are given precedence over those of a refugee in the name of fairness. That's the construct of race. Meanwhile, the descendants of the slave owners get admitted on legacy.