(FILES) In this file photo taken on May 22, 2021, a Glock 17 pistol, or handgun, is displayed during a gun ‘buyback’ event held by the New York Police Department (NYPD) and the office of the Attorney General, in the New York borough of Brooklyn. – A dozen people were killed and about 50 injured in shootings across the United States over the weekend, after President Joe Biden last month branded the country’s gun violence an “epidemic.” (Photo by Ed JONES / AFP)