
The Death and Life of Great American Cities (1961) by the journalist and activist Jane Jacobs was a sustained attack on the orthodoxies of mid-century urban renewal and modernist planning. Drawing on close observation of neighbourhoods such as Greenwich Village, Jacobs defended dense, mixed-use, fine-grained streets with short blocks, aged buildings and a continuous flow of people. She argued that busy sidewalks provide natural surveillance, the eyes on the street that keep districts safe, and that diversity of uses sustains urban vitality. She condemned slum clearance, expressways and single-use zoning as destroyers of working communities.
It became the most influential critique of modernist and renewal planning and helped halt destructive highway and clearance schemes. Jacobs turned professional attention toward the street, mixed use and organic diversity, reshaping the values of planning for decades.