But intolerance had to originate somewhere without being taught first. Even if intolerance is something that's taught and has no biological basis, then why are so many people so receptive to the idea of intolerance? If people were so naturally good, wouldn't most of them have the "instinct" to think that discrimination against people for race, sex, sexuality, etc. is ****ed up? We all love to hate in some way, shape, or form. If you don't hate people because of their race, or gender, or sexuality, then you probably hate the people that do. Humans are a naturally violent species and it isn't just a trait for survival. We're a smart enough species to know that our odds of survival are better if we all cooperate with each other and yet we fight massive wars and all have nukes pointed at each other. Deep down, we all have the urge to kill each other and the only thing stopping us is we don't want to die ourselves, so we agree to try to not hurt each other and if someone does hurt or kill someone else, then the rest of us are more than eager to use that person to satisfy our need to hurt someone.