When I was a young Marine in the late 80s stationed in Naples, we used to put on dog-and-pony shows for the Swiss guard and in return they got us in to see the Pope. I wasn't Catholic but got to be good friends with a few of the guards. I went on leave to Switzerland once with one of them back to his home and things were very interesting. Switzerland has no large standing army like us or the Soviets but instead rely on an armed populace for national defense. Every house I was invited to, every male between 18 and I think their 40s had a full automatic rifle with ammo (I want to say something like 1,000 rounds or so) in the event they were called up to defend Switzerland from an invasion. The national pastime was shooting matches and I forget what road it was on but the road cut through a valley with the firing line on one side and the butts on the other where they would shoot over the passing traffic below. Now if guns cause crime and violence, you would think that the entire nation would have resembled Beirut. However, I had no problems with walking around Zurich and Bern late at night. I was never mugged, assaulted, and obviously never killed in this nation of gun owners and had a great time.
Now let's contrast this to "any large city", USA, be it New York, DC, LA, Chicago, etc. where gun control laws are very strict to the point your chances of getting a CCW permit or simply being allowed to own a firearm at all are about on par with walking on water without being Mr. Jesus Christ himself. Care to take a stroll around Central Park or downtown LA late at night? Yeah, I didn't think you would want to. And these are the areas with the strict gun control that is touted to prevent violent criminals from getting the guns and committing acts of violence against the law-abiding citizen. So, how's that all working out for you there DC, LA, New York, Chicago, etc. with your utopia of an unarmed society?