Why Are Asians So Racist?

Okay, so I am an African kid, (13), and my dad may be sort of kind of Asian, my mom is West-African! Reppin Ghana! Anyways, at school some of my "friends" always get into racial jokes, so when I say a joke that isn't even remotely racist, the Asians all turn on me and say "why are you disgracing your own people"? I'm like WTF? I am Tyson Beckfords complexion, the only thing Asian on me is my face and hair, my skin is African. After that they started this whole joke saying I am just a sunburned Asian, which is RACIST! How can I show these bastards?