[Excerpt] Urban public spaces, from the streets and squares of Buenos Aires to Zuccotti Park in New York City, have become the emblematic sites of contentious politics in the twenty-first century. As the contributors to The City Is the Factory argue, this resurgent politics of the square is itself part of a broader shift in the primary locations and targets of popular protest from the workplace to the city. This shift is due to an array of intersecting developments: the concentration of people, profit, and social inequality in growing urban areas; the attacks on and precarity faced by unions and workers' movements; and the sense of possibility and actual leverage afforded by local politics and the tactical use of urban space. Thus, "the city"—from the town square to the banlieu—is becoming like the factory of old: a site of production and profit-making as well as new forms of solidarity, resistance, and social reimagining.We see examples of the city as factory in new place-based political alliances, as workers and the unemployed find common cause with "right to the city" struggles. Demands for jobs with justice are linked with demands for the urban commons—from affordable housing to a healthy environment, from immigrant rights to "urban citizenship" and the right to streets free from both violence and racially biased policing. The case studies and essays in The City Is the Factory provide descriptions and analysis of the form, substance, limits, and possibilities of these timely struggles.