Once some lunatic cult loving militant Islamic bastard has spilled blood - they need to be bled white to break them of that ugly habit.
Targeting unarmed, unexpecting, civilian targets - promising death to the "infidel" and celebrating the murder of children by dancing in the street --- excludes them from consideration as an honorable adversary... They are in fact less respectable than the lowest animals....
I will not grieve -- even after hundreds of thousand of these contemptible bastards are killed.
Semper Fi