The rise of studies in human evolution, sociobiology, etc. have brought new ways of looking at political behavior, social scientists in the humanities can benefit from these studies and create better theories of social interaction. This also means adapting to the changing cultural and genetic environments, a people or a social system that does not adapt could even become extinct.
For example, the return of ethnopluralism means a return of man to himself as a local group-being, which means a return to real altruism after being estranged by hedonistic individualism and quixotic universalism. It might not be an exaggeration to say that ethnopluralism may solve the riddle of human interactions.
Ethnopluralism is not a one-race imperialism, not mono-racialism, it is the return of all ethnic cultures and groups to the natural political configuration of ethnostates, in line with real human nature which continues to prefer kin and group-selection. Imperialism always breaks back down into ethnostates in any case, one way or another.
Ethnopluralism can be protected internally and externally by a light sort of federalism, where cooperative competition between small states can be pursued, which is good for innovation and evolution. In the United States the natural separation of powers and states can lend itself to ethnostates, even saving the nation from inevitable future ethnic disruptions.
It still takes a little political courage to openly affirm ethnopluralism but the discussion needs to begin.