"...the US appears to have more lethal violence specifically, driven in large part by the prevalence of guns.“A series of specific comparisons of the death rates from property crime and assault in New York City and London show how enormous differences in death risk can be explained even while general patterns are similar,” Zimring and Hawkins wrote. “A preference for crimes of personal force and the willingness and ability to use guns in robbery make similar levels of property crime 54 times as deadly in New York City as in London.” America’s weak gun laws make it much easier to commit shootings like these. This is a widely known fact, including among terrorist groups. Back in 2011, a now-dead American al-Qaeda operative, Adam Gadahn, said as much in a video to supporters"