Let us consider the other end of the seesaw. The originators of the civilian concentration camps in Southern Africa were not Muslims. The proponents of "manifest destiny" who were complicit in the decimation of the native Americans were not Muslims. Eichmann was not a Muslim. Hitler was not a Muslim. The Spanish Inquisition was not
imposed by Muslims. The users of Agent Orange were not Muslims.
If not "terrorists", what label can we use? "Super-terrorists"? None of the above were Muslims. Neither, in common with some present day practitioners of terror, were they Christians---no matter what label they hypocritically tried to display.
A couple of old saws apply--"People in glass houses----"
          and--"Two wrongs can never make a 'right' "