As even those who endorse it concede, cosmopolitanism has a motivational problem. There is a need for strategies to generate support of global norms conducive to cosmopolitanism, but which do not rely primarily on the motivating force of the moral argument. This article makes the case for civic vigilance as an answer to this problem. It argues that support for cosmopolitan norms could be advanced by encouraging a recognition of the ‘boomerang effect’: the ways in which global injustice undermines the (...) freedom of one’s own political community. The article offers evaluative criteria for different motivational strategies, assesses prominent alternatives to moral motivation, and finally defends the appeal to civic vigilance. (shrink)