Non-fatal firearm violence declined from 1993 through 2004, then fluctuated in the mid-to-late 2000s.

FORBES: Disarming Realities: As Gun Sales Soar, Gun Crimes Plummet

While firearm violence accounted for about 70 percent of all homicides between 1993 and 2011, guns were used in less than 10 percent of all non-fatal violent crimes.

FORBES: Disarming Realities: As Gun Sales Soar, Gun Crimes Plummet

For violence to be down so much as firearm ownership has increased by so much, this tells me the claim of firearms being the source of violence cannot be correct.

FORBES: Searching For Hard Data On Guns And Violence