The people in power always want to look for something other than negligent parents or personal mental derangement to blame these things on, so they naturally try to blame the objects used (in this case, firearms) or whatever the current pop culture fad is (in the 70s it was comics, in the 80s it was music, today it's video games). I've loved and frequently been around firearms since I was young and regularly play violent video games, yet I've never had any inkling of a desire to do what those whose names I refuse to acknowledge (because that's what they want) did in places like LAX, Sandy Hook, or Aurora.