’This innovative book punches well above its size, weight, and length. Olusanya offers a panoramic survey of the emotions in prompting, industrializing, coping with and, ultimately, transcending mass atrocity. Olusanya reminds us that perpetrators of mass atrocity, however ugly, still remain human. For Arendt, evil may be banal but for Olusanya this banality is the result of cognitive dissonance. This exciting book is bound to cause sparks, open debates, and refresh the field.’ Mark A. Drumbl, Transnational Law Institute Washington and Lee University, USA ’This is an insightful study that combines psychological and social theories to further our understanding of the dynamics of mass atrocities. Scholarly, cogent, and clear, the author brings to the fore the importance of emotions in criminal behaviour, and offers an original contribution to the study of mass violence.’ Majid Yar, University of Hull, UK 'The author’s efficiency and capacity to succinctly and accurately explain the various bodies of empirical research he is pulling together is impressive. As a detailed and multifactorial integration of criminological and psychological findings this book makes a real contribution to the field.' Criminal Law and Criminal Justice Books