The politics of sexual minorities has been an understudied topic in the political science discipline. Recent years have seen a growing body of scholarly research that examines these often marginalized people and their challenges when building communities. Sexual minorities whose sexualities differ from dominant sexual norms are conventionally conceived as stigmatized outsiders, which contributes to their social movements and identities. However, differences among sexual minorities concerning ideology, race, and lifestyle may (1) undermine group cohesiveness and (2) show how debates among sexual minorities reflect divisive society-wide debates on inclusiveness and belonging. The four works in this essay, which focus on American and European cases, make significant contributions to these debates.