If gun violence is concentrated in a few neighborhoods and all states contain such neighborhoods, then state statistics do matter, don't they?
We can all agree that taking away peoples' guns would lead to less gun violence. (This is the part where you say "but that's impossible anyway" or "but the 2nd amendment" which doesn't really refute my point)
It didn't work in Canada. The criminals still have guns. Mind you when you share a large border with a nation that has lots of guns how effective could it possibly be? I'm not blaming the USA, I'm blaming the Canadian politicians for failing to take this into account.
I know many people who would disagree with this.