This anthology presents recent philosophical analyses of moral, political, and legal responsibility of groups and their members. Motivated by reflection on such events as the Holocaust, the exploding Ford Pintos, the May Lai massacre, and apartheid in South Africa, the essays consider two questions - what collective efforts could have prevented these large-scale social harms? and is some group to blame and, if so, how is blame to be apportioned? The essays in the first half consider the concept of collective responsibility in light of the debate between individualists and collectivists. In the second half these theoretical discussions are applied to cases involving harms in professional and business contexts, health care, wartime, and racial relations. Collective Responsibility represents a comprehensive collection on the subject, bringing together a wide diversity of philosophical perspectives. Its theoretical and applied essays should make this collection of interest to both scholars and students interested in ethics and political philosophy.