I think the most interesting aspect of this is that fact that segregation appears to be natural. For example, there is no integration policy (that I'm aware of) to integrate whites and hispanics but they seem to form clear lines of demarcation naturally. Additionally, despite integration policy in southern cities, the clear lines of demarcation between whites and blacks is pretty stark.
You can force schools and such to be integrated but you can't force neighborhoods..fact is that both whites and blacks prefer to live with people of similar culture, social status, and interests.
There is nothing wrong or racists about it. Sure we can work together, go to school together, etc but even in those environments people are going to separate into their own groups with similar social status and interest. It is natural human behavior and it shouldn't be seen as a problem.
The only time it is a problem is if you have a wealthy, successful black family wanting to live in a neighborhood of majority white people of the same social mode, and they are denied that right because of color. But in the real world, middle class or rich white people won't build a nice house in a majority black ghetto, which leads to this separation in big cities. On the flip side, a successful black family won't build a house in a white trash trailer park.
It is way more based off of money and social status than it is race.