Police citizen encounters do not occur in a vacuum. Police systems globally have similarities and/or differences which remain largely understudied and therefore underexplained. Comparative policing is a new frontier for policing research as it aims at integrating the institutional and/or macro determinants of police strategy and provides important insights into the context in which such strategies emerge. This volume shows how lessons and insights emerge from a comparative approach to policing research in various regions of the world. It demonstrates the explanatory power of cross-national studies, with a particular focus on politics, policies, and for what concerns the nature of police work and the legitimacy of policing. The book presents comparative studies from different geographical locations such as Latin and Central America, Africa, India, and Europe, and offers insights on: Police worker politics in India and Brazil Police, non-state security actors, and political legitimacy in central America Trust in the police and the militarization of law enforcement in Latin America The origins of police legitimacy in Europe How organizational contexts matter by analyzing police-adolescent encounters in France and Germany Legitimacy and cooperation with the police in two African states. Cross-state and cross-society research is desirable to increase our understanding of variations of the macro context in which police forces operate, what policing means for citizens and for police officers as professional workers. This insightful volume is a key resource for scholars and researchers of policing, criminology, sociology, and law. This book was originally published as the inaugural volume of Comparative Policing Review / Policing and Society.