After Paris, so many people calling the killers crazy.
"The real limiting factor is finding about a dozen psychos who are so
mentally whacked that they think that this is a good idea, but are still
composed enough that they can work together effectively."
The limiting factor is finding about a dozen heroes who are so dedicated to the cause that they are willing to strike a serious blow for God.
These people are mission-identical with the Dam Busters, FTP, or the Doolittle raiders. The ideology is different, and the social infrastructure a lot weaker, and you don't like seeing what they do on the news, but they aren't crazy spree killers. They are soldiers, they think of themselves as soldiers. Their friends, families, teachers, and millions of people think of them as soldiers.
The Aurora slug and the Chattanooga murderer illustrate the difference. Aurora was a nutjob, but the Chattanooga one was a functioning, job-holding, friend-having, electrical engineer with a serious ideology for which he was willing to die. FFS, he went after the entire U. S. Marine Corps and the Chattanooga Police Department on his own. If he'd been a German in 1940 there would be statues and street signs all over Europe.
And like it or not, pretend otherwise or not, stadia, bars, malls, supermarkets, grade schools, hospitals, nursing homes, and $%^&* pet dogs are all legitimate military targets, at least they are since the Allies found a way to attack them in 1943. They remain, in this day of perfect targeting, legitimate military targets for us when there's an important, or unimportant, or possible enemy in them. Certainly they are in an insurrection, where the goal is to make the State look helpless to protect its own, frighten the government, weaken its resources, and impress the wavering with the insurgents' power, determination, and ferocity. What do you think this is, Chancellorsville?
This isn't a mental heath problem any more than it's a criminal justice problem. It's Algeria. It's Béziers.