These num­bers are part of the reason Jack Levin, a soci­ology and crim­i­nology pro­fessor at Boston’s North­eastern Uni­ver­sity, isn’t sur­prised that four mass killings hap­pened in such a short time.

Mur­ders don’t dis­tribute them­selves evenly over a 12-​​month period,” Levin said. “Just because we see four occur­ring in prox­imity to each other doesn’t mean we are suf­fering through an epi­demic of mass mur­ders but that’s what people will think.”

Read the article at USA Today →