In December 2024, a school shooting in Madison, Wisconsin left two people dead and raised urgent questions about a disturbing form of violence with no clear ideological motive. The attacker left behind a manifesto expressing hatred for society and admiration for mass killers - a case researchers now associate with nihilistic violent extremism, violence for its own sake. Producer Eric Bombicino examines what this emerging threat is, how it differs from traditional forms of extremism, and whether it's on the rise in Canada. He's joined by Amarnath Amarasingam, associate professor at Queen's University. Then, Barbara Perry, founding director of the Centre on Hate, Bias and Extremism at Ontario Tech University, explains how authorities and researchers are trying to understand and counter this phenomenon.

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