The "Myth" of Mean Girls???

When I first read Friday's New York Times Op-Ed "The Myth of Mean Girls," I couldn't believe what I read.

Were the authors really saying that what happened to Phoebe Prince in South Hadley, and other incidents like it, is not indicative of a serious, pervasive pattern of girls' aggression simply because violent crime committed by and against girls has dropped in recent decades? Do they not realize that it is irrelevant to back up their claim by citing statistics on murder, robberies...