Disturbing news, important lessons for our time

News item: La Grande, April 15, 2016 – Two boys, age 14 and 15, appear in court accused of threatening mass violence, plotting to kill their principal and others.

News item: Nyssa, March 30, 2016 – The Nyssa Police Department hosts a training at the local school aimed at helping law enforcement officers respond effectively to active shooter situations.

These are two stories with no direct link, but there’s a common reason behind the headlines: the repeated incidence of mass violence in U.S. schools over the past two decades. The news about school shootings is . . .