 Crenshaw is also the founder of Columbia Law School's Center for Intersectionality and Social Policy Studies (CISPS) and the African American Policy Forum (AAPF), as well as the president of the Berlin-based Center for Intersectional Justice (CIJ).Crenshaw is known for the introduction and development of intersectionality, the theory of how overlapping or intersecting social identities, particularly minority identities, relate to systems and structures of oppression, domination, or discrimination.Her scholarship was also essential in the development of intersectional feminism which examines the overlapping systems of oppression and discrimination to which women are subject due to their ethnicity, sexuality and economic background.