Humans tend to segregate the world: enemies on one side, friends on the other. Friends are people we know. Enemies are the Other. You can do just about anything to the Other. It doesn't matter if this Other is actually guilty of any crimes, because it's a matter of emotion, not logic. You see, angry people aren't interested in justice. they just want an excuse to vent their rage. And once you become their Other, you're no longer a person. You're just an idea, an abstraction of everything that's wrong with their world. Give them the slightest excuse, and they will tear you down. And the easiest way for them to target you as this Other is to find something that's different about you.