These bibliographies will give you a very complete approach on the city, and some elements on the commitment:
On the city:
—The city policy C. Chaline Que sais-je?
—Urban sociology H. Marchal Q.S.J.
—Urban violence and insecurity Ch Souliez Q.S.J.
—When the city unravels J. Danzelot Poche
On commitment:
—Indigenes-vous! and Engage yourself! Stéphane Hessel
– Plaidoyer pour les Intellectuels JP Sartre.
–On Civil Disobedience D. Thoreau
—Literature and commitment B. Denis point Seuil
– Le Siècle des Intellectuels M. Winock Point Seuil
– L’Homme révolté A. Camus