The Review “Sociétés Plurielles” is part of the homonymous Interdisciplinary Research Programme whose aim is to approach the fundamental topic of plurality and pluralism by creatively associating humanities and social sciences. “Sociétés Plurielles” is a double-blind peer review academic journal publishing, in thematic or Varia issues, papers showing a strong interdisciplinary commitment. When preparing the inaugural issue, in 2015, the editorial board had to face the tragic events that occurred in France at that time, mainly the attacks against Charlie Hebdo and against the kosher store at Porte de Vincennes. Those circumstances led us to interrogate, on an epistemological as well as methodological level, the very place of the “event” in the social and human sciences. The present volume gathers together historians, sociologists, geographers and political scientists who address this question through several and specific case studies.