The northern east coast is what I believe the GP was referring to. We don't really have homeless people. I've honestly never seen a homeless person before, until I left. Neither has anyone tried to "get something" out of me, until I went down south or out west.
I think it's cultural. The people who had moved out West were those that weren't necessarily successful or prosperous in their homelands (e.g. Britain, Russia, or the original 13 colonies, comprising mostly of the propertied class). So what you get is a bunch of grifters, drifters, and people who didn't "fit."
And well, if that's what your communities are comprised of, I expect them to be antisocial.
The saddest thing is I have family there, who have children; and seeing those children slowly take on the typical West Coastian attitude (and believe that property, violent, and sexual crimes are simply the way the world is), has been heartbreaking. I'm sure they will perpetuate the cycle of shit, in their own unique way -- even if it is minor.