Book excerpt: In light of many crises in the last two decades, including democratic recession, climate change, economic crises, and massive waves of migration affecting perceptions of security around the world, this book examines the impact of cultural change in political communities on the global political and security environment. Through various case studies of political communities around the world, the book analyzes contemporary responses to cultural change, often culminating in the rise of political populism and extremism. The book is divided into two parts and presents a foreword by Larry Diamond and an afterword by Eric Shiraev. The first part focuses on the micro-level of cultural change in political communities and discusses conflict mechanisms and the role of political participation in producing changes. The second part features studies on extremism and populism, analyzing their impact on cultural change in Europe. The book is intended for scholars and students in a variety of disciplines, including international relations, security studies, cultural studies, and related fields.