How do you refer to black people in a politically correct way?

How do you refer to black people in a politically correct way? In day to day speech I call black people black people. I'm not sure if medical schools would like if I called black people black people though. I would say African Americans, but that doesn't include Haitians and Jamaicans, etc. and "of the African Diaspora" sounds like I'm trying too hard.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums