Ugh, everyone loves to dredge up gun violence archive and use it as an authorative source and it's trash. They deliberately inflate the numbers of "mass shootings" by changing the definition from the FBI definition (itself occasionally modified for political reasons). The net result is that every half assed gangland drive-by with a handgun gets lumped in and people don't understand that. Outside of Chiraq and a couple of other places gun violence doesn't exist in any meaningful capacity. You're literally safer anywhere in America outside of those places than Western Europe. This is absolutely done on purpose to help push an agenda.