'Going Postal' a term that continues

In school shootings, clues from the days of 'going postal'

From the article: "...The phrase was born from a series of postal shootings in 1983 that continued, almost annually, until 1997, including one in 1991 in Ridgewood, in which an ex-postal worker named Joseph M. Harris murdered his ex-supervisor, her boyfriend and two co-workers. The wave of Post Office shootings were “aimed more at supervisors and fellow employees who were perceived by the assailants as cruel or unfair,” Don Lasseter, the author of “Going Postal,” said..."

Article Reference: www.dailyrecord.com