OK I'm 20 years old and my dad has just started to realise that I will date who I want to. There is just one little problem. My dad is EXTREMELY rasist. Its bad really really bad. My close friends that I can trust enough to bring around call him a nazi. And I acutally don't disagree. And here is the thing like I said before I will not bring all of my friends home because of what comes out of his mouth and how he acts. I'm working on moving out so that won't be a problem but here is the thing he has made it very clear that if I date a guy that who is not white and "american" then he will disown me. And by disown me he means no contact between me and him no money no help the typical disown but he also brought my mother and sister into and said that he'll keep me from them too. And he said that if I have kids with the person well I'm not going to repeat it but it was so harsh it made me cry. I want to accept that and just prepare to get disowned but its hard. What should I do?

Find a way to become independent. Right now he has all the power. Looks like your mom lets him do whatever he wants and has abdicated her position as mother. You have every right to see whomever you please. Although it isn't morally correct, unless you are under 18 your father has no obligation to house or feed you. Get your education, get a job that will support you and get out of his realm of influence.