"Communities, classes, and races" is the field of The sociology of race and ethnic relations is the study of social, political, and economic relations between races and ethnicities at all levels of society.
A few notable experts of "Communities, classes, and races" include Banton, Michael.
Several topics in "Communities, classes, and races" include Marx, Weber, W.E.B. Du Bois.
Some motivations are One of the most important social psychological findings concerning race relations is that members of stereotyped groups internalize those stereotypes and thus suffer a wide range of harmful consequences.