The tragic school shooting in Parkland, Florida which occurred two weeks ago has gotten a lot of people talking about gun policy. It has also inspired the numbers geeks to take another look at the numbers regarding “mass shooting incidents” and regarding “assault rifle weapons”. Both of these phrases are easy to say, but quite difficult to define precisely.
However, given that I consider myself a hobbyist numbers-geek, I thought I would search around and see what kind of stats I could come up with from public internet sources. I wanted to see if there are any apparent correlations between shootings and social trends in public communication, such as the rise of 24 hour cable news, the world wide web, and smartphones and social media. I was wondering if the rising “sensitivity” of our society to sensational events like mass shootings because of instantaneous media sources, widely-available sources of information that did not exist before 1980, had anything to do with the rising number of shootings in our country.
OK, so how to define “mass shootings”? There does not seem to be any one agreed-upon standard; one fairly common definition is taken from a July 2015 Congressional Research Service report. This report defined a mass shooting as “a multiple homicide incident in which four or more victims are murdered with firearms, within one event, and in one or more locations in close proximity.” An even stricter definition starts with this requirement, and further removes gang-related, » continue reading …