Eugene Robinson: Sadly, the carnage will continue

Washington - We will never know why. We already know how, but we don’t care about that. And we know, beyond the slightest doubt, that it will happen again.There can be no rational motive for mass murder, which means that asking why Stephen Paddock turned the Las Vegas Strip into a killing zone is ultimately a futile exercise. He may have had nominal or imagined reasons for his homicidal anger. But nothing can really explain the decision to spray thousands of concert-goers with automatic we