Opinion: What the unruly Frontier Airlines passenger reveals

The disgraceful behavior of a man who assaulted three crew members on a Frontier Airlines flight this weekend has wider cultural implications than might be obvious at first glance. The disruption, captured in smartphone videos that have since gone viral, was, apparently, just one of 3,715 reports of unruly passengers so far this year, according to the Federal Aviation Administration. What’s going on here? Have we lost all sense of civil behavior?