While governments around the world struggle to maintain service levels amid fiscal crises, social innovators are improving social outcomes for citizens by changing the system from within. In Agents of Change, three cutting-edge thinkers and entrepreneurs present case studies of social innovation that have led to significant social change. Drawing on original empirical research in the United States, Canada, Japan, Germany, Denmark, and the Netherlands, they examine how ordinary people accomplished extraordinary results. Sanderijn Cels, Jorrit de Jong, and Frans Nauta offer lively illustrations and insightful interpretations of how innovators, social entrepreneurs, and change agents are dealing with powerful opponents, the burdens of bureaucracy, and the challenge of securing resources and support. With practitioners, scholars, and students of public policy and management in mind, the authors dissect the strategies and tactics that social innovators employ to navigate the risky waters of their institutional environments.