America has a problem with mass/rampage shootings.
These things have been sensationalized by the media, I remember when I was younger the shock of the columbine shooting, watching it live on TV. America changed. Those two assholes became superstars. And the media helped a great deal.
There was a pew study in 2013, most americans perception was that firearm related crime was worse than ever, even though it has steadily declined over the past two decades. This shows peoples perception by what they are force fed, and what is reality in numbers don't jive