whereas, at least in the U.S. "black people" is. There is not necessarily any cultural similarity, other than to some degree skin color, among various Caucasian groups. It has become convenient, based on America's racially-charged culture, and certainly from the perspective of African Americans, to differentiate people by skin color but it really is an imperfect classification. Yes, it is clear that people with white skin are treated differently in society than people with black skin, but the fact that I share not getting arrested while walking down the street with a white farmer living in small town Arkansas doesn't in any way create some mutual identity. You need to look at ethnicity (people from Scandinavian backgrounds actually do have quite a different culture than Bulgarians), religion (pentecostal vs Russian Orthodox) environment (urban vs. rural), and definitely class and education. You will find much more cohesion if you look within the individual ethnic groups. For example, my Jewish people do stand together, have cultural cohesion, have a collective identity rooted in our continuing shared oppression by Christians and Muslims, even between the liberal secular/less-religious Jews who predominantly vote Democratic and and minority of religious Jews who tend to be much more socially conservative and therefore trend Republican. And, we happen to be multiracial and multiethnic at the same time. Southern White Protestants, who are the Republican base share common beliefs and culture and identify as a community. Southern Protestants and Jews lumped together as a single group - no way.