It is hard to wrap my head around the idea of genetic uniformity as a social good, or even cultural uniformity. America is so individualistic. There is no obligation to hang out with people one doesn't care to. But nationalism is why there are wars, and the historical trend seems to be a broadening of geographical identities. America's racist concept of "white" is an amalgam of European cultures. America itself seems to be a kind of globalization 1.0. The hostility of segregated ethnicities appears to be a dead end to me. In another century I bet all people will be permitted to be wherever they want to be on Earth, without national constructs dividing us. Nations haven't been around for very long anyway, and their existence benefits the ruling classes, not workers who share more in common with their class brothers of other countries.