Mulholland,
I gave an exampe, in real-life, about Kennesaw. What is to doubt about that? In DC, they banned handguns, and crime is STILL rampant.
Unless you can tell me why economic theory is severely flawed here, what argument can you proffer up to counter it? What doubts? Tell me them and I'll tell you how they're handled! Don't be Vauge!
If you raise the cost of committing a crime (ie, greater chance that the target will shoot you), you naturally LOWER the incidence. Supply and Demand, that's all this is.
Secondly, "meaningful?" How about just economic development, education, opportunity?
Thirdly, here is a strategy for reducing gun crime. Legalize drugs. Gun violence is highly linked to gang activity, and gang activity is highly linked to drug distribution, turf wars, et al.
Fourthly, banning guns does nothing to prevent gun crime except ensuring that law abiding citizens do not have guns.
In the US we have devolved into a nanny culture. That's a weakness.