On October 9, the Crime Prevention Research Center (CPRC) released a revised report showing that 92% of mass public shootings between January 2009 and July 2014 took place in gun-free zones.
The CPRC report was released in response to an Everytown for Gun Safety study claiming only 14% of mass public shootings took place in gun-free zones. Everytown actually claimed 86% of such incidents occurred in places where guns were allowed.
Using the same numerical standard that Everytown used — four or more people killed — but taking all rules and regulations against firearm possession into account, CPRC showed that only 8% of mass public shootings occurred in places where citizens could have guns for self defense.
Source: AWR Hawkins, Breitbart.com