The spread of conspiracy theories is one of the defining features of our times. Outlandish claims of a hidden illuminati running the world, a paedophile ring involving a presidential candidate operating out of a pizza parlour and hoax school shootings and terrorist attacks are now part of a creeping belief system that is attracting growing numbers of converts across the world.

In Dangerous Conspiracies, Amarnath Amarasingam and Marc-André Argentino take us into this world of paranoia and delusion to reveal the dangerous and violent consequences of certain conspiracy theories and why understanding their impact on society matters. From the manipulation of public opinion to the erosion of trust in institutions, and acts of extreme violence, this clear-eyed book offers a comprehensive examination of how bad ideas take hold and thrive in the digital age to pernicious effect.

Drawing on a range of contemporary case studies, the authors explore the role played by conspiracies in inciting violence, fostering extremist movements, and undermining democracy. They argue that it is no longer enough to dismiss conspiracy theories as harmless fictions – we must grapple with the profound impact they are having on individuals, communities, and nations across a range of areas from politics to security, health to politics. As conspiracy theories continue to captivate and divide societies, this book serves as an important wake up call, compelling us to critically engage with the complexities of conspiracy theories and work towards a more informed and discerning citizenry.

Amarnath Amarasingam is Associate Professor in the School of Religion, cross-appointed to the Department of Political Studies, at Queen's University in Ontario, Canada.

Marc-André Argentino received his multidisciplinary PhD from the Individualized Program at Concordia University in the departments of Theological Studies, Engineering and Computer Science. Based in Canada, he works across efforts to counter radicalization to violence and national security threats.