Legal scholar Kimberle Crenshaw is one of the foremost thinkers in the field of Black feminism. Her groundbreaking work on the theory of intersectionality includes not only legal scholarship, but also scholar-activism as the executive director of the African American Policy Forum.
Google trends shows that interest in intersectionality has been on the rise. Intersectionality refers to the way that systems of oppression merge to create cumulative experiences of disadvantage and privilege depending on one's social identity.
To learn more about intersectionality, read Crenshaw's 1993 Stanford Law Review article "Mapping the Margins: Intersectionality, Identity Politics, and Violence Against Women of Color."