[pygy_]

The argument is that fewer guns in circulation decreases violence. That is to the point where cops are unarmed in Norway, most of the UK and Ireland, Iceland, New Zealand, Botswana and a dozen smaller countries.

[_-david-_]

The US has been increasing the number of guns and has seen a decrease in violence.

[pygy_]

It might have reached saturation.

Violence is decreasing everywhere else too (dropping lead gasoline and screen time are the probable drivers).

The US is still an outlier as far as gun deaths go.