Why are some people so stubborn about Asian races?

haha That's kind of like how people argue with me by telling me I was born in China even though I was born and raised in the U.S. There are only so many ways I have to tell people I'm a natural U.S. citizen and I wasn't born in China. Same goes for how there's only so many ways you can tell people that you're Bengali and not Indian. You just have to walk away from some people and leave them with their idiocy.