US has 5 percent of world’s population, but had 31 percent of its public mass shooters from 1966-2012

23 agosto 2015

Despite having only about 5 percent of the world’s population, the United States was the attack site for a disproportionate 31 percent of public mass shooters globally from 1966-2012, according to new research.
http://www.sciencedaily.com/releases/2015/08/150823091847.htm