The great urban diversity of Mumbai has given rise to a range of religious mobilizations that are not only shaped by a history of communalism along religious lines but also driven by intra-religious rivalry and competition in their urban environment. Against the backdrop of a global megacity, contemporary Shi‘ite religious activism in Mumbai provides evidence of the importance of global processes of religious mobilization, while also showing its entanglement with state regulation of religion. An advertising campaign by a Shi‘ite media center illustrates that such religious activism with global ramifications can only be understood if one also takes its intersection with state-sponsored regimes of religious diversity into account. Media practices of Indian Muslims as a vulnerable minority are especially responsive to normative discourses and images of religious diversity, and mobilize alternative strands of Indian secularism in order to counteract the fragility of their citizenship.