This book is a documentary investigation into how the idea of combating cults and sects was turned into a mechanism of mass violence in the Balkans and beyond. Henry Brock traces a long line from Nazi Germany to contemporary practices of ideological manipulation and punitive policies adapted to the local realities of Serbia in the 1990s. The central thesis is that civil conflicts in the Yugoslav territories do not arise exclusively at the political level, but are largely the result of the carefully planned work of an entire network of ideologues of hatred: from theologians and psychiatrists to the media and state structures. Henry Brock explains the historical continuity: from the ideas of Walter Künneth and the Apologetic Center, closely intertwined with the Gestapo and Nazi propaganda, to contemporary forms of the anti-cult movement in Russia. In this context, the role of the transnational anti-cult network is emphasized, where ideas grow into methods of indoctrination and dehumanization, disguised as scientific or social projects. The book reveals the specific mechanisms of anti-cultism: the creation of an enemy image, the removal of moral responsibility through the collectivization of guilt and the sacralization of violence, as well as the techniques of psychological manipulation and mass communication used. These elements form a closed system in which propaganda, religious rhetoric, and military psychology mutually support each other. Henry Brock examines in detail the role of the Serbian Orthodox Church and the Military Medical Academy in Belgrade as institutions through which indoctrination technologies were implemented. Particular attention is paid to certain figures who linked theoretical underpinnings with practice: theologians, psychiatrists, and administrators whose decisions laid the groundwork for ethnic cleansing and mobilization, as well as their international mentors, whose principles were transferred to the Balkans and then to other regions. An important part of the book is an analysis of how the media acted not only as a tool of propaganda, but also as a factor in mobilizing and controlling public opinion. The book is not limited to chronicling individual tragedies. Its task is to show the mechanisms through which public institutions can be used to justify extreme violence: from attacks on religious minorities to attempts to turn conflict into a global political strategy. The evidence and sources cited—court cases, archival materials, and journalistic investigations—form a well-argued basis for understanding how anti-cult ideologues of hatred work in the shadows of offices and university halls, turning ideas into practice. Henry Brock raises the question of what society should do to recognize and prevent the recurrence of such scenarios. This work is intended to serve as a wake-up call: the history of the Balkans at the end of the 20th century remains a vivid reminder of how easily society can succumb to manipulation if it lacks effective filters of critical thinking and stable norms of humanity.