In English This article proceeds from a critical reading of the role of religion for nation-building in India. In particular, the authors discuss how the Indian notion of secularism relies upon a number of religious legacies manifest in a Gandhian notion of what constitutes religious and political communities. Proceeding from this general picture, the authors examine how Hindu nationalists have used such legacies to enforce exclusionary practices by establishing certain hegemonic structures of rigid religious boundaries and practices with the aim of maintaining antagonistic movements within the Hindu fold. This, the authors argue, has been the case both among Hindu nationalists in India and among the widespread diaspora in Europe, Canada and the United States. Here, the authors critically evaluate a number of attempts to challenge these hegemonic structures in terms of secular and religious forces as well in terms of legalistic understandings of citizenship rights. It is argued that religion can and has played a positive role in Indian nation-building, but that Hindu nationalism has continuously reproduced exclusionary practices against other religious communities and worked against any forms of assimilatory processes.