One example for me personally is the level of aggression in the locals. There are certain streets I avoid due to this aggressive behavior, and something like that wasn't even mentioned.
Perhaps there are other missing variables too.
edit: in case anyone was wondering, no, I'm not implying some kind of racist undertone here. I've walked through many diverse neighborhoods in many cities without any problem whatsoever.
By "aggression" I mean panhandling and other interruptions by people undergoing obvious psychosis with no sense of social norms.
The reason I stated this oddly is because there's a large tangent of people on HN who will attack you for inferring that some homeless people (yes, these psychotic people are generally homeless) are psychotic and aggressive. Perhaps they live in gated communities?
No matter what I do, these people are allowed to exist where I live, but I don't consider them part of my community at all.