That's great, but how do you expect that to happen, when we refuse to address the massive divisions along these lines that exist today?
I suggest handwaving them away. (Works for the neo-cons.)
Otherwise, someone will try to institute something like affirmative action, which outlived its usefulness after about five minutes.
Seriously, it seems that there's a persistent paradox in that every attempt to address those massive divisions ends up exacerbating them. You can't re-condition someone who is raised in an environment where racism is implicit, if not explicit. Or maybe you can... change an individual. But cultural change will take decades, and won't happen as long as racism is supported by "cultural pride" that isolates whole groups of people from those whom they consider inferior (which is how all groups regards all other groups).
The truth is, it's not at all difficult to find people who insist that black/Native/Hispanic people receive massive advantages, even in areas where they are still discriminated against, such as in hiring or housing. For that matter, a surprising number of younger white people will insist that black people get to attend college for free - even though black students tend to take on more student loan debt due to lack of family wealth. things like AA simply never touched on issues such as these in the first place, and these attitudes have often predated the Civil Rights Act in the US, so AA cannot be the reason or these attitudes.