Racist and generally rude family

So I'm black and I recently started dating a white guy. I have always been into white guys but never said it specifically because my brother is so racist. He told me he would beat up my future boyfriend if they were white, he met my current boyfriend and made a racist comment, etc. And my family in general is just rude when it comes to him. I like him so much and I wish they would stop, but now matter how much I tell them to or mention how that bothers me, they don't stop (mostly my brother). I'm 18 and my boyfriend is 20. I would move out but currently I'm unable to and I can't move in with him because he's going to bootcamp soon and then he's being stationed. What can I do now though? My mom found out that I had sex with him and banned him from the house. But I think if he was the same religion that I was raised in that she would give us another chance. It's all just screwed up. Smh 😞