There's also the question of if their ideology/belief had anything at all to do with the deed. Granted, it probably did in this case... but certainly not every mass killing is political.
Like asking where on the spectrum of "Hamburger to Hotdog Preference" was the Boston Bomber? ****in' hotdog lovers should take the blame for it.
I'm a Taco lover myself.
....wait..... we were talking innuendos, right?