"Identity politics is political action to advance the interests of members of a group whose members perceive themselves to be oppressed by virtue of a shared and marginalized identity (such as race, ethnicity, religion, gender, and sexual orientation). Some groups have combined identity politics and Marxian social class analysis and class consciousness — the most notable example being the Black Panther Party — but this is not necessarily characteristic of the form."
http://en.wikipedia.org/wiki/Identity_politics