But this isn't even mostly about leadership potential. It's about the social environment that makes it so people with certain traits will more likely rise to leadership positions in society. Power concentrates not by merit, but through complex social and cultural factors, and race is very politically relevant. Existing institutions and cultural factors will favor a white Harvard graduate over an Asian graduate becoming a leader of some political institution. So in service to Harvard's goal of having the next generation of leaders in society go to Harvard, they are correct to bias their admissions towards whites (and blacks, hispanics, etc).