Ok, so the headline of this is... weird given the content.
The headline appears to be a bait and switch or something. It discusses several myths portrayed by the media & politicians ... and argues against them. It's... a confusing article given it's headline
http://washingtonexaminer.com/crime-study-no-rise-in-mass-shootings-despite-media-hype/article/2542118
Media hype about mass shootings in America has fostered a myth that the killings are on the rise and that an assault weapon ban, expanded background checks and greater attention to the mentally ill will curb a rampaging epidemic, according to an authoritative and exhaustive study by a noted criminologist.
Instead, according to James Alan Fox, author and criminology professor at Northeastern University, mass shootings have remained stagnant over 34 years, averaging 20 a year, and few were committed by the type of berserk psychos portrayed by the media.