In the normally sleepy town of Plano, Texas, nine people have been shot dead, after a row broke out during a party to watch a Dallas Cowboys’ football match on TV.
So far this year that’s the highest number of US citizens killed in a shooting. Yet the massacre passed by almost unmentioned in the US media.
A 2015 study in the journal Behavioral Sciences and the Law, based on 5,563 interviews, found that “a large number of individuals in the United States self-report patterns of impulsive angry behavior and also possess firearms at home (8.9%) or carry guns outside the home (1.5%).”
So around one in ten US adults has a gun and is prone to impulsive anger.