In "Sister Outsider: Essays and Speeches" (1984), Lorde asserts the necessity of communicating the experience of marginalized groups to make their struggles visible in a repressive society. She emphasizes the need for different groups of people (particularly white women and African-American women) to find common ground in their lived experience, but also to face difference directly, and use it as a source of strength rather than alienation. She repeatedly emphasizes the need for community in the struggle to build a better world. How to constructively channel the anger and rage incited by oppression is another prominent theme throughout her works, and in this collection in particular.