The idea of social injustice is pivotal to much contemporary moral and political philosophy, and yet this concept has repeatedly failed to attract the detailed analysis it deserves. How could so much be written about social justice, and so little about social injustice? The essays in this book are an attempt to rebalance this anomaly. The first chapter in this book provides a comprehensive and engaging account of the idea of social injustice. It is argued in the chapter that there are three dimensions to social injustice: misdistribution, exclusion, and disempowerment. Building on this initial analysis of social injustice, the other chapters in this book cover a range of different themes including distributive justice, exploitation, torture, moral motivations, democratic theory, voting behaviour, and market socialism.