Answer:
Racism was a justification just because of the skin color of someone else. We thought that just because they were different, we could treat them less than human. We know that we don't talk to our Roomba vacumes all sweet and nice. We weren't exactly the nicest to the "slaves". If they didn't do what we wanted, they were treated even poorly. The names and racist ideas were just a "bonus" that came along with slavery.
*i'm not being racist in anyway. i'm sorry if i have offended anyone.