Why do libs want racial diversity in everything?

Seriously, people want to be around people that has the same interests. Blacks rather be with blacks--whites with whites mexicans with mexicans muslim with muslim--------I know there are exceptions, but these exceptions would have happened no matter what. Why did katie whats her name state that we should have a cosby show with muslim--------WHY? If libs weren't so prejudice, themselves,they would let people be people without labeling everyone dont you think?