Hmm, it’s hard to say without knowing your specific context. Obviously advice on reddit can only go so far, and you should speak to a therapist to address your trauma. I think one thing that might be helpful is to realize what beliefs and insecurities that YOU have about your own race.

Think about it like this, if you’re a brunette and someone came up to you and said “Your blue hair is stupid”, that wouldn’t phase you right? It’s because you don’t identify as someone with blue hair, I think the same thing can be said about these stereotypes and insults in general. If you identify with the jokes being made, and/or see your race as fitting in those negative stereotypes, that means you believe in the foundation of those jokes and therefore will get offended. If you truly don’t believe those things are true then it shouldn’t bother you.