  The second half of the twentieth century saw the emergence of large-scale political movements—second wave feminism, Black Civil Rights in the U.S., gay and lesbian liberation, and the American Indian movements, for example—based in claims about the injustices done to particular social groups. These social movements are undergirded by and foster a philosophical body of literature that takes up questions about the nature, origin and futures of the identities being defended. Identity politics as a mode of organizing is intimately connected to the idea that some social groups are oppressed; that is, that one’s identity as a woman or as African American, for example, makes one peculiarly vulnerable to cultural imperialism (including stereotyping, erasure, or appropriation of one’s group identity), violence, exploitation, marginalization, or powerlessness (Young 1990). Identity politics starts from analyses of such forms of social injustice to recommend, variously, the reclaiming, redescription, or transformation of previously stigmatized accounts of group membership. Rather than accepting the negative scripts offered by a dominant culture about one’s own inferiority, one transforms one’s own sense of self and community. For example, in their germinal statement of Black feminist identity politics, the Combahee River Collective argued that 