Questions of citizenship, belonging, and ­national identity shape contemporary life. Who is and who is not a citizen, and how this is determined across national and racial lines, has a deeply rooted history. In ancient Greece, tragedians like Aeschylus, Sophocles, and Euripides responded to their particular political moment with plays that demanded audiences to consider the nature of citizenship and nationality within their society. Dan-el Padilla Peralta expounds on how Euripides’ Ion deals with the question of citizenship and how it resonates across the long history of racialization.