Really though... I think that racism is kinda part of nature... I mean, think about what living in the jungle would be like if you weren't aware of how different people looked different, you would be wary of that which does not resemble you at first, until you understood it better and knew it wasn't so different from yourself, no? However, having said that, in our society and all societies around the world today, there really is no reason for racism at all. Even if someone has only bad experiences with people of a particular sex, gender, orientation, religion, etc, there isn't much reason to assume everyone who fits that criteria is going to be like that.