As a response to increasing influences of transnational corporations (TNCs) over the lives of the poor, development NGOs have tried to promote their responsibility in cooperative ways: partnership in development projects and voluntary regulations. Notwithstanding some degree of success, these cooperative ways have failed to bring fundamental changes to TNCs. This article outlines the limitations of the mainstream corporate social responsibility (CSR) and the potential of grassroots social movements to make TNCs accountable. People in developing countries have been neglected in the CSR agenda; however, they have power to change corporations as labourers, consumers and citizens. Drawing on case studies, this article suggests that NGOs should support grassroots people in building global networks, constructing collective values and creating the information flow in order to overcome the current shortcomings of community-driven social movements. For these new roles as advocates and facilitators for grassroots movements, NGOs need to transform themselves by pursuing core values.