On Monday morning, President Trump made his first televised statement about the mass murders committed over the weekend in El Paso, Tex., and Dayton, Ohio. He called for action to “stop mass killings before they start,” citing what he said were a number contributing factors: the contagious nature of mass murder; the glorification of violence in video games; and the need to act on “red flags” to identify and potentially confine the “mentally ill monsters” that he said commit the crimes.
Many of these factors have been studied by scientists for decades. Here are answers to some of the most common questions about the causes of mass murder. CONT.
Benedict Carey, New York Times