Which one was worst nazi Germany or African American slavery?

They were both very bad and evil, but you can't compare the two. Nazi Germany was just pure evil and satanic. They were well aware of what they were doing and what they wanted to do. However, the American slave trade lasted a LOT LONGER, and it goes much deeper and had a more psychological effect on a whole race of people, not only blacks but whites who STILL think they are better in some ways. The American slave trade ruined the souls of people for centuries and had a much longer lasting effect that can still be seen today. That is also apparent when you look at the uneasiness that grows when people bring up slavery, yet they talk about the holocaust.