http://www.amazon.com/Moral-Combat-Atheists-Gender-Politics/dp/057807186X/ref=sr_1_1?s=books&ie=UTF8&qid=1318995914&sr=1-1
Sikivu Hutchinson just wrote a new book called Moral Combat: Black Atheists, Gender Politics, and the Values Wars, the first book on atheism, the Black Church and the Religious Right, etc. from a black woman's perspective.
Also, Harriet Washington, author of Medical Apartheid is another author who should be "known" http://www.amazon.com/Medical-Apartheid-Experimentation-Americans-Colonial/dp/076791547X/ref=sr_1_1?s=books&ie=UTF8&qid=1319408286&sr=1-1