Inside the Minds of Mass Murderers

Book excerpt: Since the first recorded U.S. case of mass murder in 1949, massacres have been increasing each decade, with workplace violence taking the lead as the most common form. The psychology of the killers, however, differs from that of spree, serial, or situational murderers. Based on a review of mass murders, the author argues that the red flags of a developing mass killer are obvious and predictable, and people who learn to recognize them may be able to defuse a potentially violent situation before it occurs. Using details from various cases, she examines the different kinds of mass murders, from visionary to family to workplace, and the distinct psychological dynamics of the different types of murders.