My stance on mass shootings might shed some light.  Mass shootings are when a crazy goes in and blazes away right? Yes with the caveat that if 4 or more people are involved its defined as a mass shooting: A guy goes into the 7-11 robs the places and shoots the clerk there are 6 people inside the store=MASS SHOOTING. Very misleading. 
"Real" mass shootings where the crazy has an AR or whatever happen less frequently than the media portrays. Disregarding suicides: aprox 80% of gun violence takes place in major cities where a HANDGUN is used by a young black male against another young black male. Mass shootings vs regular ol' gun violence is like plane crash vs car crash statistics: The plane crash kills hundreds of people at once. Horrible! they happen very infrequently but they are BIG NEWS! The car crash only kills a tiny number of people. but they happen so frequently that the news doesn't care even though the body count is huge! 30,000 auto deaths per year.