The AR-15 is functionally the same as many hunting rifles. I could take my grandfathers autoloader rifle (or 12 ga shotgun loaded with buckshot) and do a LOT more damage than a shooter with an AR-15. The only difference is cosmetic.
Over a 35 year period, the number of mass public shootings in the USA rose during the violence escalation decades of the 1970s and 1980, then leveled off, despite a growing population and greater availability for firearms (more people, more guns).
The FBI created a study of what they labeled “active shooter” events from 2000-2013, but they merged both ASEs and MPSs. Combined, this data shows an increase whereas other studies that separate the two do not. Their study starts in the year 2000, which had a low number of public shootings (only one).
Though the raw number of mass public shootings has risen VERY slightly over three decades, the number of people killed has fallen as a function of the population. Mass public shooting deaths make up less than 1% of all gun homicides, making them a small part of the problem.
Just a few "assault weapons" facts:
In 1994, before the Federal “assault weapons ban,” you were eleven (11) times more likely to be beaten to death than to be killed by an “assault weapon.”
In the first 17 years since the ban was lifted, murders declined 43%, violent crime 43%, rapes 27% and robberies 49%.
Nationally, “assault weapons” were used in 1.4% of crimes involving firearms and 0.25% of all violent crime before the enactment of any national or state “assault weapons” ban. In many major urban areas (San Antonio, Mobile, Nashville, etc.) and some entire states (Maryland, New Jersey, etc.) the rate is less than 0.1%.
Even weapons misclassified as “assault weapons” (common in the former Federal and California “assault weapons” confiscations) are used in less than 1% of all homicides.
Police reports show that “assault weapons” are a non-problem.
In one survey of criminals in Virginia, no surveyed inmates had carried an “assault weapon” during the commission of their last crime, despite 20% admitting that they had previously owned such weapons.
Even the government agrees. “... the weapons banned by this legislation [1994 Federal Assault Weapons ban - since repealed] were used only rarely in gun crimes”
source: Impacts of the 1994 Assault Weapons Ban: 1994-96, National Institute of Justice, March 1999
gunfacts.info