Yeah, no. This is a strictly American dynamic and a super American centric point of view. Only America is crazy enough to make it be White Vs Black, and only Americans have made homogeneity be about ethnicity rather than cultures. In other parts of the world, people will tend to define themselves based on nationality and other cultural traits, and it's literally possible to experience discrimination between two groups with the same ethnicity that are being supposedly divided over "cultural" differences. What people call white culture is just the bunch of stereotypes of dumb "White America" and all their stupid 'traditions'.