These white people you think are villains are simply trying to preserve their culture.

It is IMPOSSIBLE to ethnically disconnect so-called "white" people from so-called non-whites in the US. It's all one culture. CULTURE is not the word you want to use. You are arguing for ethnic DNA testing, so that the "white" descendent of Thomas Jefferson who's great great great... grandmother was black can be excluded from the DNA proven melanin deficient "white" assholes who think they're different. The fact is, everyone is somewhat mixed. This discussion at DAR usually descends into being racist about fewer and fewer people, until one ends up at Sub-Saharan Africa. All of the groups considered non-wite that are not Sub-Saraharan are excluded eventually from the usual "who is white" dialectic. It's REALLY FUCKING STUPID, not to mention MEAN to one's fellow man and in violation of the golden rule. If you don't like blacks, just say so. So-called "whites" cannot claim to have an exclusive 'culture' or 'ethnicity'. Eugenics failed in the early 20 century and won't return for reasonable people. That said, there are some who want to be pure Hebrews, or pure Japanese, or pure Native American, or whatever. But even in these groups there are exceptions for the relative who fucked someone of a different ethnicity.