If you wish to be referred to as a slave owner for post-liberation times. Cracker was the title bestowed on those who owned slaves. The nickname conjured from listening to the constant crack sound of the whip. It seems more poloticaly correct to call, "african americans," black. And caucasion, white. Due to the fact, we are already consistently called white, if we are called white, they should be black. I believe in equality, not social norms.
I don't think the constitution offers freedom, nor takes it away. Firstly, freedom is of independent pursuit. Once we are lead to believe freedom can be given, we embrace the loss of it. Freedom can be apparent to a slave, and to that of the highest social class. It's more of a matter of ones insight on self.