"This book was born out of astonishment. At a time when the waves of the anti-imperialist struggle are sweeping across the world, when movements of revolt are bursting out at the very heart of advanced capitalism, when the revival of working-class action is creating a new political situation in Europe, ‘urban problems’ are becoming an essential element in the policies of governments, in the concerns of the mass media, and consequently, in the everyday life of a large section of the population."