The answer is "conflict theorist ".
Conflict theories are points of view in sociology and social psychology research that underscore a realist elucidation of history, persuasive technique for investigation, a basic position toward existing social game plans, and political program of insurgency or, at any rate, change. Conflict theories attract consideration regarding power differentials, for example, class struggle, and for the most part differentiate truly overwhelming belief systems. It is in this manner a large scale level examination of society.