This article presents a social history of the Coalición de los Pueblos Mixtecos Oaxaqueños (Coalition of Mixtec Oaxacan Communities, CPMO), a grouping of mutual-aid associations formed by Indigenous migrants in Mexico City during the middle of the twentieth century. It draws on the coalition's archives to demonstrate how years of migration to Mexico City eroded traditional inter-village conflicts and created the conditions for a broader ethnic identity among Mixtec migrants in the capital. In addition, the coalition's collaboration with the federal government's Instituto Nacional Indigenista (National Indigenous Institute, INI) challenges common depictions of Indigeneity and modernisation as being inherently antagonistic with one another. The coalition's collaboration with the INI led its members to more consciously and visibly identify with their Indigenous roots; they had to become more Indigenous in order to become more modern.
