Because I'm not ignorant and have actuaIIy Iived with minorities and immigrants. It's not that some of my experiences with immigrants were bad, all of them were. I've lived with an Ecuadorian, Cuban, Salvadorian, Afghan, Japanese, Chinese, and Polish. All were terrible. Like not just bad or annoying or normal roommate problems, they were seriously messed up.
I'm fine with minorities if they're American, not so much with immigrants