The aim of this paper is to expand the debate on globalization and its consequences from a theoretical perspective emphasizing social processes of exclusion and inclusion. I explore these social processes in dialogue with the Spanish social movement for the rights of irregular immigrants. The paper also aims to explore new forms of resistance in the context of globalization."The declinist thesis" argues that globalization has lead to a declining importance of the nation-state and the national citizenship as guarantees of rights. "The anti-declinist thesis" oppose to this picture arguing that rights still depend on national policies. I also discuss the functions of exclusion and inclusion inherited in the concepts of citizenship and nation-state.I outline the historical and political context of the movement and explore the ideas and organizational dimensions of the movement's "knowledge praxis".I conclude that national citizenship - in a broader sense as a description of the relationship between the individual and the state - seems to play a crucial role in the life situation and the possibilities of irregular migrants to organize and protest.