As I mentioned in an earlier post, I was much more concerned about gun violence when I lived in a progressive city with very strict laws and very low legal gun ownership. Today, I live in a city where guns are common and relatively easy to buy, and it's not difficult to get a concealed-carry permit, which means you can hide the gun you have on you. I am not concerned about gun crime. To be honest, I'm not concerned about any other type of crime- it's the kind of place where people don't lock up their homes and even leave their cars unlocked when they go shopping.
How much does gun control have to do with it? Not much, is my guess. Where I live now has a much lower population density than where I used to live. Household incomes are higher. Those two factors are likely to have the largest impact, much greater than how many people are armed. The US has badly mismanaged its large cities for decades, and created a vicious cycle where the problems are used as a pretext to demand more money and more control. Since the corruption and mismanagement isn't addressed, things just get worse, and the reaction is to demand more money and more control.
The gun control debate is a political one, being used in a tug-of-war where people are left to their own devices in service of an agenda. We won't get rid of guns, and we refuse to take any steps to make people safer, by tackling the real issues and trying steps that can work on a smaller scale.