Liberal democracy arguably requires a sense of equal membership in a shared society, and in today’s world, this “shared society” is inextricably linked with ideas of nationhood. Defenders of majoritarian nationalism worry that this sense of membership in a shared national society is being eroded by multiculturalism, and argue that we must instead reaffirm the centrality of shared national identities, perhaps through “majority rights.” In this chapter, I argue that while the idea of a shared society is indeed important for liberal democracy, and that it will inevitably reflect ideas of nationhood, this is in fact an argument for strengthening, not weakening, multiculturalism and minority rights. The fact that membership claims are filtered through the lens of nationhood creates a series of formidable “membership penalties” for minorities. A robust commitment to multiculturalism and minority rights can be seen, not as a threat to the ideal of equal membership in a shared society, but as a remedy for membership penalties, and as a way of building a more inclusive ethics of membership.