Your wrong, the last guys to do that were in Rhawanda Africa. Oh, and I don't designate them as sub-human. To be human, IMO, you have to act like a human, which they don't.
I readily agree that jihadi-fascists’ acts are definitely inhuman, but they themselves are still human beings and reclassifying them only excuses their actions. We must hold them to account as human beings. When we resort to their methods to establish our supremacy we undermine our own position and authority. Down that route lie the generations of conflict such as have been seen in Ireland, and the Middle East.
My point was that to redefine people as anything other than strictly human is the first step down a very dark path, as you cited with your reference to Rwanda. That, too, started with words and escalated to genocide. That started quietly with terms of abuse and grew. It grew in the fertile soil of hatred and malice that was the product of generations of enmity and murder (in the 1920s, 50’s and 70’s). What happens when we inculcate our children to regard other people as anything less than human beings is that we end up living in Rwanda in 1994.