What motivates individuals to stand up against injustices that don't personally affect them? Becoming Allies explores a vital but often overlooked dimension of social movements: the role of those who support a cause without being directly affected by its injustices. While most scholarship centres the conflict between social movements and the State, this book shifts the focus to allies-individuals who stand in solidarity and amplify marginalised demands. Drawing on interviews conducted with civil liberties activists and on documents from their private records, this book traces the evolving politics of allyship in India. Anchored in the histories of groups like the People's Union for Civil Liberties and the People's Union for Democratic Rights that rose in the context of the Naxalite Movement and the Emergency, the book sheds light on the ethics, dilemmas, and strategies of standing alongside others in struggle.