This book provides a unique perspective on the perpetrators and victims of political violence, using original evidence from the deadly attacks perpetrated in Paris in 2015. Much of the current literature focuses on the perpetrators of such violence. This volume, however, offers a deeper analysis by focusing not only on the terrorists themselves but on understanding the reactions of the general population affected by such lethal acts. It provides a more detailed view of the opponents of terrorism, namely us, and explains how our own reactions can increase or decrease, the potential for political violence. Part I introduces the most relevant theories within social psychology and political psychology that are used to understand terrorism; Part II examines empirical evidence from a French context; and Part III discusses policy implications, with the prevention of political violence as a long-term goal. Finally, the volume offers a blueprint for a more appropriate conceptualization of terrorism as arising out of intergroup conflict suggesting ways to build a resilient society. This book will be of interest to researchers, teachers and students across social psychology, sociology, political psychology and political science.