Notes on Contributors -- Series Preface -- Acknowledgments -- 1 Why Neighbors Kill An Overview Richard A. Vernon and Victoria M. Esses -- Part I Individual Factors -- 2 Extreme Harmdoing: A View from the Social Psychology of Justice Carolyn L. Hafer, James M. Olson, and Alexandra A. Peterson -- 3 On the Nature of Contemporary Prejudice: From Subtle Bias to Severe Consequences John F. Dovidio, Adam R. Pearson, Samuel L -- 4 Why Neighbors Kill: Prior Intergroup Contact and Killing of Ethnic Outgroup Neighbors Miles Hewstone, Nicole Tausch, Albert -- 5 Why Neighbors Don't Stop the Killing: The Role of Group-Based Schadenfreude Russell Spears and Colin Wayne Leach -- Part II Societal Factors -- 6 When Neighbors Blame Neighbors: Scapegoating and the Breakdown of Ethnic Relations Peter Glick -- 7 The Influence of the Threatening Transitional Context on Israeli Jews' Reactions to Al Aqsa Intifada Daniel Bar-Tal and Keren Sharvit -- 8 Why Do States Kill Citizens? Or, Why Racism is an Insufficient Explanation Patricia Marchak -- Part III Synthesis -- 9 Theories of Genocide: The Case of Rwanda Howard Adelman -- 10 Applying the Unified Instrumental Model of Group Conflict to Understanding Ethnic Conflict and Violence: The Case of Sudan -- 11 The Origins of Genocide and Mass Killing, Prevention, Reconciliation, and their Application to Rwanda Ervin Staub -- Index.