How often do mass shootings occur? On average, every day, records show
The New York Times - 12/02/2015
But James Alan Fox, a criminologist at Northeastern University, said his research showed the number of such shootings has roughly held steady in recent decades.
He said that if analysts added a single year, 2014, and looked at four-year intervals instead of five-year intervals, the average number of annual mass shootings actually declined slightly from 2011 to 2014, compared with the previous four-year period.
“It’s a matter of how you slice it,” said Professor Fox, who nonetheless praised the research service’s report.
While the numbers shift from year to year, there has been no discernible trend in the numbers or in the characteristics of the assailants, said Professor Fox, who is also a co-author of “Extreme Killing: Understanding Serial and Mass Murder.”
“The only increase has been in fear, and in the perception of an increase,” he said. “A lot of that has been because of the nature of media coverage. In the ’70s and ’80s, we didn’t hear about it on the Internet — because there was no Internet — and we didn’t have cable news channels that would devote 24 hours of coverage.”