It does not. The US has far more guns. But Canada has significantly more guns than other similar western democracies. And, in fact, Canada has an intermediate level of gun violence between the extremes of the US wild west and totalitarian Europe!

It's almost like, as I said above, the clearly obvious determining factor in gun violence is the simple number of weapons. That this obvious hypothesis is simply disbelieved by large numbers of HN posters (many of whom like to call themselves "rationalists") continues to astound me.