Many among the alt.right aren't white supremacist as such, but separatist. For instance, instead of claiming that there is such a thing as a white race and that it's superior, it might be claimed that the benefits of diversity aren't obvious, that intermingling of races leads to various social problems, and that therefore a government ought provide the opportunity for people, if they choose, to live lives free from racial diversity. There is some degree of precedent for governments actively providing space for people to live particular lifestyles: for instance, Indian reserves in America, or acknowledgement of Quebec as having a special status within Canada. What I wanted to ask is -- are there good moral philosophy or political philosophy objections against this sort of separatism? Is there anything philosophically meaningful to say to a white separatist; or, given that "racial diversity leads to discord" is an empirical claim that might be true or false, is this more a matter for sociologists? I've been looking at arguments against segregation from the '60s, and by and large what I've found isn't on point -- the concern was more to do, basically, with black people being treated as second class citizens, not with whether there's anything wrong, morally or otherwise, with the idea of racially distinct communities in itself.