Critical race theory
Essentialism vs. anti-essentialism: This is about how important race is and whether it is more important than other things.  Delgado and Stefancic write, "Scholars who write about these issues are concerned with the appropriate unit for analysis: Is the black community one, or many, communities? Do middle- and working-class African-Americans have different interests and needs? Do all oppressed peoples have something in common?" This talks about how even people who are in the same group or look like they are in the same group might need different things.  This is because their lives are not only about being in that one group.