Claim: "Over the past twenty years, the number of homicides committed with a firearm in the United States has decreased by nearly 40 percent. The number of other crimes involving the use of a firearm has also plummeted, declining by nearly 70 percent."
Fact-check: Have gun-related homicides, other serious crimes decreased dramatically in the last 20 years? 
Verdict: true
Organisation: PolitiFact
Author: Janie Har
Date published: 2013-09-07T00:00:00