In a recent poll on YourBlackWorld.com, 60% of the African American respondents claimed that they are against gay marriage. The results from the poll are intriguing in light of the African American affiliation with the Democratic Party, which tends to support gay rights.
My personal interpretation of the results is that the poll numbers show that the black community is actually far more conservative than most people think. Results like these are in line with the strong affiliation that most African Americans have with the black church, which tends to lean against things like gay marriage. I would expect to see similar results on issues such as abortion.