GLOSSARY
Dehumanization: how war language removes the inhibition to kill, and why its most effective form is cold, not enraged
Updated July 30, 2026
When a war speech calls the enemy “cockroaches” or describes a bombing as “surgery,” that is not rhetorical flourish: it is a mechanism with a precise function. The technical term is dehumanization, and its function is to remove the natural human inhibition against killing one’s own kind. Understanding how it works helps read more precisely any piece on this site that analyzes the war rhetoric of one of the parties involved — whichever one.
What it is
Dehumanization does not convince the audience that violence is good: it convinces them that the target is no longer a fully human subject, capable of reciprocity. Once that reciprocity is removed, the psychological barrier that normally prevents killing a fellow human loses its logical basis. It is not a side effect of war: in many documented cases, it is a technical precondition for it.
The three families of metaphor
Dehumanizing language draws, regardless of language or conflict, on three families of imagery. The zoological-parasitic one (“beasts,” “cockroaches,” “rats”) reduces the adversary to vermin to be exterminated. The pathological-medical one (“cancer,” “infection,” “virus”) turns killing into surgery or an act of social hygiene needed to save a healthy body. The bureaucratic-mechanical one (“targets,” “enemy infrastructure,” “collateral damage”) simply erases flesh behind abstract vocabulary. The three families are not mutually exclusive: they often coexist in the same discourse, applied to different targets or at different moments of the same conflict.
The disappearance of the individual
Along with language, the single person disappears too. The distinction between combatant and civilian, between the guilty and the innocent, dissolves into a collective guilt that every member of the opposing group would embody simply by belonging to it. Individual agency is erased: what matters is no longer who that person is or what they did or didn’t do, only which group they belong to.
Moral inversion and the legal void
The offensive act is told in reverse: as defense, necessity, the safeguarding of civilization. Whoever attacks perceives themselves — and narrates themselves publicly — as a victim forced to act to avoid a worse evil. Once the enemy is defined as sub-human, protections such as the Geneva Conventions come to be seen as a bureaucratic obstacle rather than binding law: the enemy is placed in a legal void where the only perceived rule is military efficiency.
Moral disengagement, according to Bandura
Psychologist Albert Bandura mapped the underlying psychological mechanism as “moral disengagement,” in a 1999 paper that builds on his 1986 social-learning theory. Bandura identifies a set of cognitive levers — moral justification, euphemistic language, advantageous comparison, displacement and diffusion of responsibility, minimizing consequences, dehumanization of the target, attribution of blame to the victim — that let people and institutions act against their own stated moral standards without feeling the guilt that would normally follow. Dehumanization, in this scheme, is not an isolated impulse: it is one lever within a broader system.
A signal international law recognizes
Dehumanizing language is not only relevant to social psychology: it also appears in international criminal jurisprudence as evidence of intent. The “ten stages of genocide” model, developed by scholar Gregory Stanton for the organization Genocide Watch, places dehumanization — the stage in which a group is compared to animals, parasites, or disease — as the fourth stage of a process that, if not interrupted, can lead to extermination. The International Criminal Tribunal for Rwanda made this concrete in its 2003 judgment in the so-called “Media Case”: the systematic use, on RTLM radio and in the Kangura newspaper, of the term “inyenzi” (cockroach) to refer to the Tutsi population was found to be evidence of direct and public incitement to genocide, not mere war propaganda.
The blind spot: cold, not enraged
It is tempting to believe dehumanization is driven by blind hatred or instinctive barbarism. Its most effective form, however, is cold and bureaucratic: it does not require soldiers or populations to feel hatred for the target, only that they stop recognizing it as a subject capable of reciprocity. When the adversary becomes a technical problem or a risk equation to zero out, the moral barrier collapses without any need for rage.
Sources: Bandura (1999), Moral Disengagement in the Perpetration of Inhumanities · Bandura, Moral Disengagement (encyclopedia overview) · Gregory Stanton / Genocide Watch — Ten Stages of Genocide · ICTR — Nahimana, Barayagwiza and Ngeze judgment (“Media Case”), 2003