“The cultural common, Hardt and Negri write, “is dynamic, involving both the product of labor and the means of future production. This common is not only the earth we share but also the languages we create, the social practices we establish, the modes of sociality that define our relationships, and so forth.” It is built up over time and, in principle, open to all. In this way it is possible even to view “the metropolis as a factory for the production of the common.” The human qualities of the city emerge from our practices in the diverse spaces of the city, even as those spaces are subject to enclosure both by private and public state ownership, as well as by social control, appropriation, and countermoves to assert what Henri Lefebvre called “the right to the city” on the part of the inhabitants.”