In this introduction, I briefly summarize Sophia Moreau's Faces of Inequality. I situate her monograph within two highly contemporary bodies of literature — relational egalitarianism and discrimination theory — to show how it provides important insights for understanding both what it means to treat others as equals in society and how to define wrongful discrimination. Moreau's work on discrimination is of great relevance for philosophers and socio-legal theorists alike as the commentaries from the symposium contributors demonstrate, including Dale Smith, Pablo Gilabert, Andrea Sangiovanni, Daniel Viehoff, Jessica Eisen, Alysia Blackham, and Iyiola Solanke.