Fun little exercise for anyone clicking that link: Sort by highest homicide rate and scroll down until you hit "United States", counting the number of countries along the way that you'd be comfortable moving to and would expect to have a reasonably comparable quality of life to the USA.
Was the number zero? Probably, because most of those countries are not doing well. Wars, widespread poverty, corruption, exploitation, poor educational and medical outcomes.
I'm sure plenty of them are full of amazing people and cultures and would be great for a holiday, but they're not exactly nipping at the USAs heels when it comes to GDP.
Anyway, we've identified all the countries that are worse, what about the ones that are better? Keep scrolling down past the USA, still looking for that country you'd actually want to live in.
Takes a while huh? You'd think with all the promises the pro-gun people make and comparative wealth of America, it would be firmly in the #1 spot.
Ironically, you highlight the problem is violence and the drives to it over the firearms.
Nobody is claiming that gun control will stop all violence. But the existence of violence doesn't obligate us to provide quick, easy access to the means to escalate violence and maximise damage, even to people with a long history of red flags.