Some argue that the Fort Hood shootings were a crime, perpetrated by a lunatic. To be sure, the tragedy is both a crime and a symptom of madness. That, however, proves too much: any act of terrorism -- including the attacks of 9/11 -- is both a crime scene and the product of insanity. What distinguishes terrorism from a crime is the political motivation of the person pulling the trigger or flying the plane. When, as at Fort Hood, the shooter screams "Allah Hu Akbar," there is no question as to the motivation.