This site is not for the faint-hearted insofar as it launches an unrelenting attack on the notion of ethnoracial cultural diversity itself, arguing that diverse societies do not work as well as homogeneous ones:
http://www.amerika.org/politics/conservatives-discover-anti-diversity-is-more-powerful-than-racism/
“Diversity drives a civilization insane because it eliminates the ability to have social standards, ideals, directions, and aesthetics. Only what can be shared — the lowest common denominator — persists. Even more, diversity erases the genetic consistency of a population — we call this “ethnicity” — and replaces it with a generic group that lacks all of the specialized adaptations of the original population. This is why empires die and are replaced by aimless, disorganized, and ambitionless third world ruins. A few years later, Robert Putnam released his research showing that diversity destroys trust, social capital, and social order, confirming what I had written over a decade before. It was gratifying to see this as well.