The medical resident PetulantSkeptic drew my attention to the graph above, which he included in a short, sad post he wrote last fall:
The graph comes from a paper that Harcourt, a criminologist,wrote after the Virginia Tech shootings in 2007, which he blogged about at the Volokh Conspiracy:
Harcourt isn't arguing that everyone in prison should be in mental hospitals; the rise in prison population is far more complex than just jailing the unstable. Yet he and many others note that we are imprisoning many people who are mentally ill — essentially because, as a nation, we're far more enthusiastic about imprisoning people who commit crimes than we are about treating people who are mentally ill.
He's not arguing for more institutionalization -- but for better treatment. See his post or the paper for more.
I agree too with the many who feel our gun culture — from easy ownership and defend-your-turf laws to a fetishization of violence — makes it far more likely that the violently inclined will express their fury in spectacular ways like the Aurora shooting. I don't think you can separate the development of an obsessive psychotic fixation from the culture in which it develops; this is why we see these mass shootings so often here in the U.S. and so seldom elsewhere. The list of mass shootings in the U.S. since 2005 alone runs 62 pages. Is it coincidence that the alleged shooter dressed up in SWAT-team-like gear? I found it chilling and somehow utterly normal, almost expected, that (if this account is correct), after shooting 71 people in a theater amid a screenplay that reportedly made some at first think this strange live-action before the screen was part of the show, the shooter went outside to his car in the parking lot and there surrendered without trouble to police similarly clad and armed. I found it too easy to imagine that he felt a sort of fraternity with his new captors.
We've reached a point where it all feels quite scripted. Yet no one seems tired of this movie.
