What you are running into is 'passive racism.' It's not the in-your-face-racism like some people. No, most people will never admit they are racist, but we all have biases. That's where racism comes in. People hate others because of what they're taught, by parents, teachers, friends, coaches, etc. It's the 'nature vs. nuture' argument. Except when you look closer, it's all enviorment.