You know, I don't have anything against black people. I think everyone should own one.
I'm confused. Did you mean to offend black people?
I meant that I own a black slave.
Black people are human beings and deserve to be treated with as much respect and dignity as everyone else. 
Black people do not deserve the negative view that you are placing on them because they are not property.
I think they are property and they can be used and mistreated.
But you are wrong, Black people were freed a long time ago. And mistreatment of a black person is just as illegal as mistreatment of any other person. They are not other people's property.