over the course of 18 years, from 1998 to 2015, our list contains 2,354 attacks and at least 4,880 shooters outside the united states and 53 attacks and 57 shooters within this country by our count, the u makes up 1 49 percent of the murders worldwide, 2 20 percent of the attacks, and less than 1 15 percent of the mass public shooters all these are much less than america’s 4 6 percent share of the world population

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