This chapter examines contemporary trajectories of slavery among the Haalpulaar maccuBe of Mauritania. It first describes the Haalpulaar society's position in the spheres of ideology, religion, marriage, ritual, land tenure, and politics in Mauritania before turning to the main forms of discrimination they are currently facing today as well as their resistance to it. The chapter describes strategies designed to cross, rather than challenge, social boundaries. This politics of exclusion among the Haalpulaar maccuBe illustrates the importance of external acceptance in gaining admission into a group. Acceptance requires that one must be chosen by the members of the group. Moreover, this exclusivist attitude highlights the ambivalent tactics of former slaves who advocate social justice and equality between status groups yet reproduce hierarchical principles within their constituency.