In this post, Prof. Alette Smeulers, University of Groningen, discusses the diversity and nuances in what drives individuals to become involved in mass atrocities. She presents a typology of perpetrators, which can help us better understand the drivers of perpetration, the internal social dynamics of violent groups, and how to fairly attribute (criminal) responsibility.
The trial of Adolf Eichmann in Israel in the sixties was a landmark event when it comes to studying perpetrators. It led to Hannah Arendt’s classic book ‘Eichmann in Jerusalem’ with the much-discussed subtitle: the banality of evil. In the book she also used the phrase ‘terribly and terrifyingly normal’ to describe Eichmann. This phrase has always fascinated me as it triggered the question: are perpetrators indeed terribly and terrifyingly normal? And if so, are they all terribly and terrifyingly normal? It became the subtitle of my book on perpetrators of mass atrocities, although with a question mark. And to answer the question immediately: yes many of them are but not all.
Perpetrators differ
Perpetrators of mass atrocities are all different: they differ in role, rank and motive. Some are predisposed to violence, others are not: some have criminal records, a violent past or are mentally disturbed while others have always been law-abiding citizens before they got involved in mass atrocities. When studying perpetrators, we need to take these differences into account. In literature, many explanations have been given as to why perpetrators commit horrendous atrocities, such as: obedience, conformity, ideology, hatred, material gain, self-interest and fear. These are all factors that indeed do play a role but in different ways for different types of perpetrators. They can also in some cases vary over time. Let’s give an example: For some perpetrators ideology is key and a motivating factor. These perpetrators strongly believe in an ideology which motivates them and which makes them get involved in mass atrocities. They believe that the goal justifies the means. Other perpetrators are not driven by an ideology but after they became involved in mass atrocities, for whatever reason, the ideology will help them rationalize and justify their crimes. They hence start to hold on to that ideology much more after the facts than they did before.
Fear can also play a role but here too the type and source of the fear can be very different. Some perpetrators get involved because they fear their opponent, while others fear the people in their own ranks. Some act under actual force and extreme pressure and have to choose between their own lives and that of the other person; while others merely suffer from social fear. They don’t want to be left out or be seen as cowards by their peers (see Browning’s book Ordinary Men)
Perpetrator typology
The perpetrator typology presented in my book Perpetrators of Mass Atrocities – Terribly and Terrifyingly Normal?, distinguishes 14 types of perpetrators. The typology was developed by studying perpetrators from different time periods and conflicts since the Second World War. I then looked at differences and similarities and grouped the perpetrators into categories ending up with 14 different categories or types of perpetrators. I included all perpetrators I could find enough information on in order to be able to analyse their role and motives – to understand what made them do what they did. The information used was found in biographies, interviews, letters, diaries, public statements, autobiographies and analysis of other scholars.
The typology is meant to provide more nuance to understanding perpetrator behaviour and show how dispositional factors and situational factors interact and how this can lead to different outcomes for different people. The perpetrators who are strongly driven by ideology are called the Fanatics, Holy Warriors and True Believers. The ones driven by material gain are called the Profiteers and Criminals; those by self-interest in the form of a career, the Careerists. Those who want to show they are the best at their jobs are the Devoted Warriors. The Followers are less ambitious and driven by obedience, the Avengers by revenge. Some are very vulnerable and have been put under extreme pressure, like the Compromised Perpetrators, while others go through a coercive training period, like the Professionals. Some are very ordinary people like the Careerist, Devoted Warriors, Avengers and Followers while others are predisposed to violence like Predators, Deranged and some Criminals. At the top of the chain of command are the Criminal Masterminds, people like Hitler, Stalin, Saddam Hussein and Pol Pot. They are crucial but cannot come to power without the support of others.
Why do we need a typology of perpetrators?
It helps us see and understand the differences and nuances between types of perpetrators, thereby providing us with a better understanding of why people can come to commit mass atrocities. It shows the nuances in how ideology, obedience and fear work and how it does so in different ways for different people. Knowing this helps us understand how to prevent mass atrocities, as different types of perpetrators need to be deterred in different ways. To deter Criminals and Profiteers we need to make sure that war is not profitable. A good health care system can help people with mental deficiencies function well in society and prevent them from becoming mass murderers. By ensuring that our societies are more inclusive we can take away the fertile breeding ground for extremism. By teaching our children to think critically, we can prevent them from uncritically following a violent group.
The typology also teaches us more about the internal social dynamic between the various types of perpetrators and it shows that perpetrators play different roles within violent and oppressive groups. At the top of the chain of command there usually is the Criminal Mastermind: they set the direction but are usually not physically involved in the crimes. They are supported by Fanatics who are driven by fanatical hatred or contempt and set out the ideological framework and motivate others like the Holy Warriors and True Believers. Criminal Masterminds are usually assisted by several power hungry and greedy Careerists, who want to make their mark in history. Going down the chain of command there are Devoted Warriors who want to show that they are the best at their job. They completely subdue themselves to the leadership. Profiteers, Criminals and Predators take advantage of the situation and sometimes take the lead within particular military units, while Followers just go along. Understanding these dynamics makes it easier to come up with tailor-made interventions.
Relevance for international criminal law and transitional justice
When it comes to attributing individual criminal responsibility, understanding that there are different types of perpetrators and how they affect and influence each other could help to attribute blameworthiness in a fairer way. In the past this was not always the case. After WWII in the Netherlands for instance, Ans van Dijk a Jewish woman who was captured by the Nazis and forced to work for them while being threatened with deportation to Auschwitz, where she would have been killed, was a Compromised Perpetrator. When faced with the threat of deportation, she gave in and after a while adapted to her new role. Sadly enough, van Dijk betrayed up to a hundred, possibly even over two hundred Jews. After the war she was one of the 39 people who were executed after having been given a death penalty in the Netherlands. Remarkably, the Dutch police officer who had put pressure on her was a witness in her trial rather than the other way round. He was later executed as well but the two Nazis above him were not and they were eventually released from prison. Ans van Dijk would, however, never have committed her crimes or even been tempted to do so, without them forcing her. The two Nazis in turn were pressured to do so by the lists, schemes and quotas imposed by Eichmann and as presented during the Wannsee conference. It shows how the dynamic of social influence, pressure and coercion trickled down to this unfortunate woman.
For transitional justice to really serve justice it is important to better understand the individual roles and responsibilities and to focus on those who create the context, who invent the system, who started the dynamic leading to mass atrocities as the prime targets of the criminal justice system. Others lower in the chain of command who committed horrendous crimes, can be prosecuted and punished too but in order to do so fairly we need to be very much aware of their agency and of how big their role really was. I very much hope that the typology of perpetrators as described in the book can help to better understand how atrocities come about and who played what role. I hope it can help give all the cogs in the machine a human face and provide a better understanding of both the complexity and fluidity of responsibilities involved in periods of mass violence.
Alette Smeulers is professor of international crimes at the University of Groningen and author of the book: Perpetrators of Mass Atrocities: terribly and Terrifyingly Normal? (Routledge 2024). She also has a podcast series: Terribly and Terrifyingly normal with Nicola Quaedvlieg. For more info see her personal website