Hmm...
Well this movie bordered the line of racism and historical fact. Many African americans did sell out their own to survive. Many people don't really take it so seriously because it's all in the past. But perhaps if not to be more serious, be a little more respectful. Let things in the past stay in the past. Let's not make a joke movie of cruelty. If anything, be supportive.
African Americans also want to know that blacks weren't the only slaves in the world as well so they shouldn't always use the "slavery" act to concentrate on their culture only. Native Americans, Hispanics/Latinos, Indians, and even many of the British or Britsh rebels were slaves in the past. Many cultures dealt with it. But not too many cultures bring it up so abroad. If anyone, women in the past weren't special either. In fact, I think women had it the worst.
Not to be judgemental or critical but at least have a considerable amount of repect or at least some courtesy. The world sucks more these days with Terrorism, no need to bring up more problems.