http://upload.wikimedia.org/wikipedia/commons/thumb/5/54/US_...
But that's not all; prison labor is now used as cheap labor to compete with foreign countries, instituting a new age of under-the-radar slavery.
http://www.youtube.com/watch?v=gwT6CisM0mU
The more you look at this cyclic process, the more disturbing it becomes.
http://www.npr.org/templates/story/story.php?storyId=1220177...
I think the history of our neglect as a society of the mentally ill has little to tell us about crime and a lot to tell us about the homeless underclass in America.
To digress: I just visited DC again a couple weeks ago. You go in a public bathroom right outside the Washington Monument and there are big signs next to the sinks that say "NO BATHING". I felt ashamed.
That makes sense if you look at one as related directly to the other or vice versa (aka mostly not), but if you look at both as symptoms of a bigger issue then it becomes readily apparent that they are highly related: Americans don't want to deal with 'undesirables'. Lock em up or make them homeless, whatever, just as long as we don't have to deal with them.