"The number of shootings in which a gunman wounds or kills multiple people has increased dramatically in recent years, with the majority of attacks in the last decade occurring at a business or a school, according to an FBI report released Wednesday.
"The study focused on 160 "active shooter incidents" between 2000 and 2013. Those are typically defined as cases in which a gunman in an attack shoots or attempts to shoot people in a populated area.
The goal of the report, which excluded shootings that are gang and drug related, was to compile accurate data about the attacks and to help local police prepare for or respond to similar killings in the http://www.theguardian.com/world/2014/sep/25/us-mass-shootings-risen-sharply-fbi-report
future, federal law enforcement officials said."


I have noted that some people's research skills are curiously lacking.