The Psychology of Evil: Why People Commit Violent Acts

Table of Contents

The Ordinary Face of Atrocity

You are standing in a hallway, and through a half-open door you can hear someone being humiliated. The words are sharp and deliberate, and the silence between them is worse. You do not move. You tell yourself it is not your business, that you do not have the full picture, that intervening would make things worse. You stand there, and by standing there, you participate — not as a villain, not as someone who chose cruelty, but as someone who chose the comfort of inaction over the discomfort of witness. You walk away and by evening the memory has already begun to soften into something you can live with.

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The story we tell ourselves about evil is that we would recognize it. That it announces itself with visible malice, that its face is distorted by something we would instinctively recoil from. This story is not just wrong — it is a protective fiction, one that serves the precise function of keeping us from looking too hard at the architecture of ordinary life. Because if evil were monstrous by nature, then the hallway would never have been a problem. You would have acted. The monster would have been obvious.

In 1963, Hannah Arendt attended the Jerusalem trial of Adolf Eichmann, the Nazi SS officer who had been one of the chief logistical administrators of the Holocaust — responsible for coordinating the deportation of millions of Jews to extermination camps across occupied Europe. What she expected, perhaps what everyone expected, was a demon made flesh, a man whose face would confirm the magnitude of what he had organized. What she found instead was a bureaucrat. A man who spoke in clichés, who struggled to construct an original sentence, who kept insisting that he had simply followed orders and done his job well. In her resulting work, Eichmann in Jerusalem: A Report on the Banality of Evil, Arendt articulated something that the twentieth century has never fully digested: that the most catastrophic violence in modern history was not executed by psychopaths operating outside the boundaries of normal psychology, but by functionaries operating entirely within them.

The concept she placed at the center of her analysis was not cruelty as pathology but what she called thoughtlessness — a specific failure to exercise independent moral judgment, a willingness to subordinate conscience to procedure. Eichmann did not hate the individuals he processed. He had, in some administrative sense, no relationship to them as individuals at all. The system converted human beings into logistical problems, and he solved logistical problems. This is not a portrait of a broken mind. It is a portrait of a mind working exactly as institutions train minds to work.

What Arendt’s observation exposed — and what remains deeply uncomfortable — is that the distance between a person who commits atrocity and a person who simply goes to work is not a distance measured in psychology. It is measured in context, in institutional framing, in the degree to which a structure successfully diffuses individual moral accountability across enough people that no single person ever holds the full weight of what is being done. The Milgram obedience experiments at Yale, beginning in 1961, produced data that most people still find easier to dismiss than absorb: roughly sixty-five percent of ordinary American participants, when placed inside an authority structure with a credible institutional frame, administered what they believed to be severe and potentially lethal electric shocks to a stranger. Not because they were sadists. Because the situation told them this was the appropriate thing to do, and because the situation had been carefully constructed to distribute responsibility away from the individual hand pressing the button.

The monster was never the point. The structure always was.

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Obedience as the Hidden Infrastructure of Violence

psychology of evil

You follow the instruction because the instruction comes from someone wearing a white coat, standing in a room that looks like a laboratory, speaking in a calm and measured voice. That is the entire architecture. Not ideology, not hatred, not a broken childhood — just a coat, a room, a voice, and your willingness to remain seated.

In 1963, Stanley Milgram published results from a series of experiments conducted at Yale University that should have permanently altered how Western societies understand institutional violence. They did not. Participants were told they were assisting in a study on learning and memory. A stranger in another room — actually an actor — was strapped to a chair and connected to what appeared to be an electrical shock generator with voltage markings running from 15 to 450 volts, the upper registers labeled simply: “Danger: Severe Shock” and then, beyond that, two unmarked positions suggesting something for which language had run out. Sixty-five percent of participants administered every shock they were instructed to deliver, all the way to the maximum. They were not sadists. They were not ideologically motivated. Several of them wept while pressing the buttons. One man laughed in a way that Milgram himself described as nervous, almost detached — the laughter of someone who had vacated his own body and was watching from elsewhere.

What Milgram had exposed was not cruelty but something more disturbing: the ease with which a person surrenders what he called the “agentic state,” the transition from autonomous moral actor to instrument of an external will. Once inside an institutional hierarchy, the participant no longer experienced himself as the origin of his actions. He experienced himself as a conduit. The responsibility, in his mind, had traveled upward — to the experimenter, to the institution, to the structure itself. Hannah Arendt had observed something adjacent in Jerusalem in 1961, watching a man in a glass booth describe the logistics of mass deportation with the tone of a mid-level administrator managing a supply chain. The bureaucratic frame, she argued in her 1963 report, had not merely permitted evil — it had reorganized the self so thoroughly that evil became indistinguishable from procedure.

The terror inside Milgram’s numbers is not the 65 percent. It is the architecture that produced them. Those experiments were conducted not in a government facility or a military context but in the most normalized institutional setting available to an American in the early 1960s: a university. The white coat was not a uniform. It was a signal of legitimate knowledge, and legitimate knowledge confers the right to be obeyed. Milgram replicated his experiments in a commercial building in Bridgeport, Connecticut, stripped of the Yale name and prestige, and obedience rates dropped — but only to 47.5 percent. The setting mattered. The setting was not everything.

Philip Zimbardo’s later work, particularly the theoretical frame he developed in “The Lucifer Effect” in 2007, extended this into what he called situationism: the argument that context, role, and permission structures do more to determine violent behavior than individual character. A person does not commit institutional violence because of who he is. He commits it because of where he is standing, what he has been told he represents, and whether anyone above him in the visible hierarchy has said stop. When no one says stop, the action continues — not from malice, but from the more banal engine of role completion.

What this reveals about the ordinary workplace, the ordinary school, the ordinary family structure is something most people sense but cannot articulate without implicating themselves. Every hierarchy produces a version of that room. Every role assigns its wearer a portion of suspended conscience.

The Social Mirror That Demands a Monster

You have probably sat across from someone accused of something unforgivable and searched their face for the mark — some asymmetry of the jaw, some flatness behind the eyes, some visible residue of what they did. You found nothing. The face was ordinary, and the ordinariness disturbed you more than a scar would have.

That disturbance is not accidental. It is the product of a cultural labor that has been running for centuries: the labor of making evil legible, exterior, and most importantly, locatable in a person rather than a situation. When Philip Zimbardo published The Lucifer Effect in 2007, he was not merely revisiting his 1971 Stanford prison experiment — he was issuing an indictment of the entire Western psychological tradition’s preference for dispositional explanation. The book’s central argument is precise and devastating: ordinary people placed inside sufficiently corrupting situational structures will do extraordinary harm, not because something monstrous sleeps inside them, but because the architecture of the situation makes harm the path of least resistance. Zimbardo tracked the same logic through the Abu Ghraib photographs, where American soldiers who had been neighbors, churchgoers, and Little League coaches were documented torturing prisoners — and watched the military justice system respond by prosecuting those individual soldiers while leaving the chain of command, the detention policy, and the institutional incentive structure entirely intact.

That legal and cultural response was not confusion. It was precision. Selecting a few individuals for the role of monster performs an essential social function: it inoculates the system. The moment a single soldier is named evil, the institution that built the cage, set the shifts, removed oversight, and cultivated an atmosphere of dehumanization is declared innocent by contrast. The monster absorbs accountability the way a lightning rod absorbs a charge — completely, and in a way that protects everything standing nearby. Hannah Arendt observed something structurally similar in 1963 when she covered the Eichmann trial in Jerusalem: a bureaucratic apparatus of industrial murder had managed to distribute moral responsibility so thinly across so many desks and corridors that almost no individual link in the chain felt the full weight of what the chain was doing. The scandal of her phrase “the banality of evil” was not that it excused Eichmann — she was explicit that he should hang — but that it refused the comfort of his uniqueness.

Societies resist that refusal violently. The category of the monster is not merely a cognitive error; it is a political technology. When a school shooting occurs, the cultural machinery moves with extraordinary speed toward the biography of the shooter — his isolation, his internet history, his diagnosed or undiagnosed pathology — and moves with extraordinary slowness toward the institutional failures: the mental health infrastructure that was defunded, the social isolation that schools are structurally incapable of addressing, the regulatory environment that placed a weapon inside his reach. The monster narrative is not chosen because it is more accurate. It is chosen because it is cheaper. Monsters require punishment. Systems require reformation, and reformation costs money, disrupts power, and implicates people who would prefer not to be implicated.

What this produces, across generations, is a population trained to look for evil in faces rather than in arrangements. The sociologist Stanley Cohen described in States of Denial, published in 2001, the cultural mechanisms through which entire societies maintain willful ignorance of harms occurring in plain sight — not through stupidity, but through the psychological economy of implication avoidance. If the harm lives in a person, you need only remove the person. If the harm lives in the structure you inhabit, benefit from, and reproduce daily, then looking clearly at it demands something of you that most people are constitutionally unwilling to give.

The face you searched for a mark — it was always going to be empty, because the mark was never going to be there.

Violence as Meaning-Making Under Existential Threat

The Psychology Of Evil People

You are sitting in a waiting room that looks like every other waiting room you have ever sat in, and for a moment you cannot remember why you came, what you are waiting for, or what you will return to afterward. The sensation lasts perhaps four seconds. Most people file it under fatigue and move on. But Ernest Becker, writing in 1973 while dying of cancer in a Vancouver hospital, argued that this flicker of groundlessness is the central terror of human existence — and that virtually every structure of meaning civilization has ever constructed exists primarily to prevent that sensation from lasting longer than four seconds.

Becker’s argument in The Denial of Death is not simply that humans fear dying. It is far more destabilizing than that. His claim is that human beings are biologically conscious enough to know they are temporary, and that this knowledge is so fundamentally unbearable that it produces what he called “immortality projects” — symbolic systems through which individuals anchor themselves to something that will outlast their bodies. A nation. A creed. A bloodline. A revolution. These are not innocent sources of meaning. They are prosthetic eternities. And the psychological investment in them is not casual. It is total. Because when the project fails, when the symbol is mocked or the identity is threatened or the narrative loses coherence, what collapses is not merely a belief — it is the entire architecture that has been holding the terror of annihilation at bay.

This is the mechanism that contemporary radicalization research keeps rediscovering under different names. Arie Kruglanski, whose work on significance quest theory emerged from decades of empirical study culminating in the 2018 volume The Three Pillars of Radicalization, documents a remarkably consistent pattern across jihadist networks, far-right movements, and lone-actor violence: the majority of individuals who committed or seriously planned acts of mass violence had experienced what he terms a significance loss in the period immediately preceding radicalization. Job destruction. Public humiliation. Divorce. Legal disgrace. The loss was rarely abstract. It was personal, social, and felt as a verdict on their worth as a human being. The ideology arrived afterward, not before — as a framework that converted humiliation into mission, smallness into cosmic significance.

What this means is that hatred, while often present, is frequently not the primary engine. It is the finishing coat applied over a much older wound. The person who detonates something in a crowded space has, in the months prior, often been given a narrative that transforms their disappearance from social relevance into a sacrificial act that will echo forward through time. Becker would have recognized this immediately. The violence is not irrational. It is, within the logic of symbolic immortality, perfectly coherent. It is a bid for permanence by someone who has already experienced themselves as erased.

The German philosopher Peter Sloterdijk, in Rage and Time published in 2006, traces how entire political movements function as collective banks of accumulated humiliation — institutions that store resentment, organize it temporally, and release it as directed historical force at a moment of maximum destructive yield. What looks from the outside like spontaneous hatred is revealed on closer inspection to be a highly structured withdrawal from an account that has been building interest for years or decades. The violence that emerges is not a breakdown of meaning. It is meaning, operating at full intensity, through the only channel that has been left open.

What remains unanswered is whether societies can interrupt this channel before the withdrawal occurs — or whether the very conditions that produce significance loss are too structurally embedded in competitive, hierarchical social orders to be addressed without dismantling the immortality projects that hold those orders together in the first place.

The Self That Chooses Not to Look

psychology of evil

You have probably never thought of yourself as someone capable of watching another person suffer and doing nothing — and that comfortable certainty is precisely the problem.

The cognitive distance between you and the perpetrators documented in James Waller’s 2002 study “Becoming Evil” is not a matter of moral fiber or psychological constitution. Waller spent years tracing the transformation of ordinary men into participants in mass atrocity, and what he found was not a population of hidden monsters. He found people who had activated processes that every socialized human being carries as standard equipment: the ability to attribute reduced humanity to an outgroup, the ability to spread moral weight so thin across a collective that no single actor feels its full pressure, and the ability to reframe harm as necessity until necessity becomes invisible. These are not defects in the software. They are features.

Moral disengagement, the term Albert Bandura gave to the suite of mechanisms by which people neutralize their own ethical standards to permit harmful behavior, operates below the threshold of conscious decision. It does not require hatred. It requires only a structure — institutional, ideological, bureaucratic — that makes the harm legible as something other than harm. Soldiers who described their actions in sanitized procedural language during post-conflict interviews were not lying about their inner experience; they were reporting accurately from within a cognitive frame that had closed over the raw moral content like scar tissue over a wound.

What Waller’s framework makes genuinely disturbing is its democratic quality. The documented cases span cultures, centuries, and political systems. Perpetrators of the Rwandan genocide in 1994 included schoolteachers and farmers. The staff of Auschwitz went home on weekends. The mechanisms were not imported from some separate human subspecies — they were drawn from the same cognitive repertoire that allows you to eat factory-farmed meat without grief, to scroll past images of famine without pausing, to feel that the suffering happening outside your immediate circle belongs to a different moral jurisdiction.

There is a particular kind of investment people place in the figure of the monster — the sadist, the psychopath, the ideological extremist whose violence is explained by some internal rupture that places them beyond ordinary humanity. That investment is not analytical. It is protective. If evil requires a special ingredient, then its absence in you is a guarantee rather than a daily negotiation. The monster narrative is one of the most effective instruments of self-exoneration ever produced by a social species that needed to commit violence while preserving its self-image.

What neither Waller nor any serious researcher in this territory offers is an exit ramp. There is no chapter in “Becoming Evil” that concludes with a list of practices for inoculation, because the honest answer to what prevents ordinary participation in extraordinary harm is not a technique but a sustained, uncomfortable confrontation with the conditions under which your own cognition would fold. Most people do not encounter those conditions. That absence of opportunity is routinely mistaken for moral strength.

The question of culpability, then, cannot be resolved by pointing at the perpetrator and naming a defect. It cannot be resolved by pointing at the system and dissolving the individual into structure. It lives in the unresolved tension between the two — in the recognition that the mechanisms are ordinary and the choices, however constrained, were still made by someone who got up that morning, had coffee, and decided, or failed to decide, to look.

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🕳️ The Infinite Maze: Evil, Power, and the Human Shadow

Violence and evil are not aberrations confined to monsters—they are woven into the fabric of ordinary human psychology, social structures, and political thought. Understanding why people commit violent acts requires us to traverse philosophy, literature, and the darkest corridors of the mind. These articles trace the labyrinthine paths that lead from human nature to its most destructive expressions.

Banal Evil and Radical Evil: Kant and Arendt

Hannah Arendt’s concept of the ‘banality of evil’ forever changed how we think about violence and moral responsibility. Rather than locating evil in monstrous individuals, Arendt revealed how ordinary people become instruments of atrocity through thoughtlessness and systemic compliance. This article explores the tension between Kant’s radical evil and Arendt’s unsettling insight that cruelty often wears the most bureaucratic of faces.

GO TO THE SELECTION: Banal Evil and Radical Evil: Kant and Arendt

Golding’s Lord of the Flies: Analysis

William Golding’s Lord of the Flies remains one of literature’s most savage experiments in human psychology, stripping away civilization to expose the violence lurking beneath social norms. A group of boys marooned on an island rapidly descends into tribalism, cruelty, and murder—a parable that refuses easy consolation. The novel forces us to confront whether violence is learned or inherent, a question that haunts every serious inquiry into evil.

GO TO THE SELECTION: Golding’s Lord of the Flies: Analysis

Thomas Hobbes and the State of Nature: When Man Is Enemy to Man

Thomas Hobbes argued that without the coercive force of the state, human life would be ‘solitary, poor, nasty, brutish, and short’—a vision of humanity in perpetual war with itself. His concept of the state of nature provides one of the most influential philosophical frameworks for understanding violence as a baseline human condition rather than a deviation. This article examines how Hobbes’s dark anthropology continues to shape political philosophy, criminology, and our understanding of collective aggression.

GO TO THE SELECTION: Thomas Hobbes and the State of Nature: When Man Is Enemy to Man

The Psychology of Power: History and Theory

Power does not merely corrupt—it fundamentally restructures how individuals perceive themselves, others, and the boundaries of permissible action. The psychology of power reveals how authority, hierarchy, and social roles can dissolve personal moral inhibitions and transform ordinary individuals into perpetrators of harm. This article charts the history and theory of power psychology, from Milgram’s obedience experiments to modern research on institutional violence.

GO TO THE SELECTION: The Psychology of Power: History and Theory

Discover the Cinema That Dares to Look Evil in the Eye

If these reflections on violence, power, and the human shadow have stirred something in you, Indiecinema offers a curated streaming selection of independent films that confront these very questions with unflinching honesty and artistic courage. From psychological dramas to social thrillers, our catalog goes where mainstream cinema rarely ventures. Join us and explore the films that refuse to look away.

👉 EXPLORE THE CATALOG: Watch Indie Films in Streaming

A vision curated by a filmmaker, not an algorithm

In this video I explain our vision

DISCOVER THE PLATFORM
Picture of Silvana Porreca

Silvana Porreca

Law graduate, graphologist, writer, historian and film critic since 2008.

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