Excluding people from the human community precedes mass violence.

Evidence

In fact, excluding a person from the human community is a much more common process than we would like to think (Bar-Tal, 1990; Kelman, 1973, 2001; Opotow, 1990). … Scholars have argued that such exclusion from the human community, at times evidenced by actual signs as in the infamous yellow stars that Jews were obliged to identify themselves with, is a preparatory step toward mass violence (e.g., Staub, 1987, 1990). … Recent research findings suggest that it may also be a strategy individuals make use of when they learn of violence against an out-group perpetrated by one’s group. — Emanuele Castano, On the Perils of Glorifying the In-group, 33

Categorization

• XREF: Connects to the moral-disengagement mechanism Castano reviews, which parallels Leidner et al.’s threshold variable on glorification and the dehumanization step before in-group violence. — connects to: Persecution precedes mass killing by isolating victims and drawing death lists — Gregory H. Stanton, Ten Stages of Genocide, 16; Structural exclusion that hides its own mechanisms constitutes violence — David Theo Goldberg, John Solomos, A Companion to Racial and Ethnic Studies, 1741; The civilizing process makes violence invisible rather than eliminating it — Zygmunt Bauman, Modernity and the Holocaust, 285 (+10 more)
• ADDENDUM: The preparatory-step-toward-mass-violence framing complements the victim-reduction logic anchoring sacrificial ritual violence in the sacrifice article.

Broader Connections

• Mass violence requires seeing victims as categories, not persons #corroborates (0.90) — David Theo Goldberg, John Solomos, A Companion to Racial and Ethnic Studies, 426
• Aggressors strip victims of human status to justify their own violence #exemplifies (0.88)
• Collective violence requires dehumanizing victims into abstract categories #corroborates (0.87)
• Dehumanization of targeted groups makes violence against them seem reasonable. #corroborates (0.86)
• Structural exclusion that hides its own mechanisms constitutes violence #expands (0.85) — David Theo Goldberg, John Solomos, A Companion to Racial and Ethnic Studies, 1741
• Group isolation drives violence by filtering outside information and depersonalizing victims #expands (0.85) — John T. Jost and Jim Sidanius, Political Psychology, 4148
• Perceiving a victim’s shared humanity can break the disengagement that enabled violence #corroborates (0.82) — Albert Bandura, Moral Disengagement, 2424
• Mass atrocity requires marginalizing victims, not denying their humanity #qualifies (0.80)
• The civilizing process makes violence invisible rather than eliminating it #qualifies (0.78) — Zygmunt Bauman, Modernity and the Holocaust, 285
• Strong community ties inherently enable exclusion and intergroup violence. #complicates (0.76)
• Group violence can erupt without any prior history of animosity #complicates (0.73) — , Rudman, Laurie A - On the Nature of…, 655
• Ethnically absolutist communitarianism produces its own violence #exemplifies (0.72)