The Koran teaches that anyone who does not follow the words of the prophet Mohammed is not a real person but only an animal and can therefore be killed without any repercussions in the afterlife. That means that Christians, Jews, Buddhists, Hindus, atheists and scientologists don't have souls, are only animals and can be killed with impunity, at least as far as the immortal soul is concerned. Kinda hard to fight that kind of programming, isn't it?