People like being with their own kind. Homogeneity is the best way. Look at the demographics of any town in America. The citizens want to be segregated, it is only social engineers who want to force people to live together against their own wishes.
I see your point, its just that its laying face down, in its own urine.
That feeling of wanting to be "around one's own kind" isn't exclusive to whites, though.
"people" and "kind" and "whites" are so generic as to be meaningless.
In the 1850s the "own kind" were the Irish. In the early 1900s it was Italians, Jews. Depending where you go its different. In 2011, depending where live it might be Hispanics, Blacks, Russians. Depends on the region and who is the dominant group.
But there is a truth that you and many others are missing and that is the secret to good relations among people
IS DIVERSITY. Nothing tears down walls better than having to work w/ someone who is from a different ethnic/social/religious group/class than yourself.
Humans are animals for whom the visual is the strongest sense. And we have an almost instinctual fear of the unknown/change. So, physical differences between people (skin color, body type, whatever) can be where we stop.
However, while we are animals we are also humans and what makes me a human and not a dog is that I can say "no". I can use logic and reason to discern which of my fears are petty and useless and which have value. Being guided by those fears w/ no thought is to live and to be an animal. So, you can live like an animal, in fear of the other, the different, or you can be a human and reach beyond those limitations.