There is something to understand about the human psyche when it comes to such things as a jihad against the infidel.Yet MY idea generally is not Abduls idea when he Jihads someone for Allah. MY general idea that lying is unacceptable is clearly not the Presidents idea...thus a "General" position is invalid.
The key to overcoming our internal voice that demands we follow the Golden Rule is to dehumanize the opposing party. For example, Jews were vermin, slaves in the deep south were glorified apes, non-Muslims are infidels, and the unborn are a fetus, etc.
For you see, if we lower humans to that of animals, what then do we allow ourselves to do to them? We allow ourselves to treat them like animals by using them as beasts of burden, lock them up in zoos, or simply kill and eat them, etc.
That is one of the things that terrify me of atheists. They think that we are glorified animals, and our only value is intelligence/knowledge.