Audre Lorde was a caribbean-american poet & feminist, contemporary to Adrienne RIch & Sylvia Plath. She is often quoted in today's postcolonial & afro-american feminist critique, because of her early focus on racism & sexism & above all - how the feminist movement never will be part of the lived lifes of black or colored women if it doesn't confront its own power hierarchies. Racism & sexism is often based on the same type of structures & these structures are often so imbedded in the way that we perceive the world, how we make sense of it & how we judge it (in scientific terms), that if we do not confront this & deconstruct these structures then whatever freedom we get from it will only be freedom for some, not all.
See also the portrait of bell hooks.