Ok, I'll come in with a more drastic view on safety in America and guns.
From what I've seen in my state, as compared to what I've seen in Chinese cities I lived in, people here are generally more lax in safety. By that I mean, the houses are more easily broken into, and in a handful of communities, some leave their doors unlocked. Some even leave their key around their front porch in case their kids couldn't find their own key. And the windows are easily broken into. Houses are built for comfort, not for security, where I live now.
That's the sort of things that would be unthinkable in Chinese cities. I've talked to people from Nigeria, India, Malaysia, etc., and in high crime areas, people generally ARE a lot more careful about their belongings, and their homes(or apartments, etc) would have more than protection than the front / back door protection that you see around here. That would mean bars, metal railings, etc etc.
Having a home built more for comfort does give rise to drastic action when someone does break into your house. But the thing is, if the culture changes, or if people are more used to homes that are built more for protection than comfort/aesthetics, perhaps they won't need guns. JMHO, basing it on one of US's more gun friendly states.