I hate racism, it's one of the worst qualities a human can posses in my opinion. Unfortunately, when people are racist it's extremely hard to make them see the world in a non-racial way. So, I think your best bet would be to abide by your parents rules no matter how much it sucks. Sooner or later you'll move out and you can do as you please (as long as you follow the law).
“You are not entitled to your opinion. You are entitled to your informed opinion. No one is entitled to be ignorant.”
― Harlan Ellison
― Harlan Ellison