"Collective Violence: Effective Strategies for Assessing and Intervening in Fatal Group and Institutional Aggression" explores the variety of groups and institutions explicitly committed to destructive aggression. Topics addressed include population groups which pursue their own specialized forms of violence against others; culture-infecting and polluting themes which desensitize citizens and societal institutions to deadly force and preparations for catastrophic violence; and the role of our scientific establishment and the media in promoting culture-wide themes that justify, legalize, and reify violence.