What should I do about my best friend?

Ok, so my best friend and I have been good friends for quite a while now. She seemed really nice and weird and funny...in the beginning. But now that we've entered High School, she has become down right racist. I'm Black and she's Puerto Rican. All she tells me these days are all the Black jokes she finds online. Like i of all people want to hear that. She is also color struck! I'm really sick of her calling me dark. She is REALLY pasty pale. So everyone seems dark compared to her. Me on the other hand, I'm like Zoe Saldana complexion. Lastly, She wrote a note once saying that I am nothing but an African dancing around the fire waving my fingers around my mouth. Making that weird sound. Like Native Americans did. Anywaaaz, should I stay friends with her or should I just drop her or what? What should I seriously do?