I hear this frequently in my house

My dad uses this racial slur all the time. He's really against my sister going out with a black guy. My dad wouldn't my sister's boyfriend in the house because he's black. My dad says that he is a low-life crackhead because he's black. In reality, her boyfriend is actually nice and he is nothing like that. My sister was forced to move out of the house because of my racist dad. His reasoning is really poor too. It's because he was brought up this way. Sometimes there is nothing you can do to change these kind of people.