Among the violent acts perpetrated by radical Islamist groups in Europe, the Charlie Hebdo massacre in Paris has been one of those that has challenged established categories of public debate the most. Through a multifaceted and detailed analysis of the public discourse around the Charlie Hebdo episode in France, Germany, Italy, and the UK, Discursive Turns and Critical Junctures offers an in-depth analysis of how political groups and religious organizations have reacted to the event, which claims they have made in the public sphere, and how they have justified such claims. Drawing on newspaper sources and discourse analysis, the authors navigate the complexities caused by political violence. They develop a threefold comparison that considers how the debate differs across countries; how it evolved over time; and how it varies when one looks at mainstream media compared to social movement arenas. Based on a triangulation of quantitative and qualitative analyses, the volume pays particular attention to radical left, radical right and religious actors and to issues related to migration and integration, secularism and cultural diversity, security and civil rights. In particular, they focus on the way in which transformative events act as critical junctures within different public spheres. Starting from the nefarious attacks on January 2015, this highly relevant, theoretically compelling, and methodologically sophisticated study of public debates in Europe adds substantially to the growing body of research into critical junctures as discursive turning points and gives insights into into a number of debates ranging including citizenship and political violence.