

In fact, Crenson discovers that in many cases community polities arise not from the cohesiveness of close-knit "urban villages" but from the social diversity, inequality, and conflict that are associated with urbanism itself. Residents' efforts to maintain public order, health, and safety frequently spring from social chaos and discord rather than from homogeneity. Instead, it is precisely when neighbors dislike one another that some features of informal self-organization emerge. In this surprising, powerful work, he finds that such neighborhood action does not arise from a strong sense of neighborliness or community feeling. The setting for Matthew Crenson's book is Baltimore. What makes an urban neighborhood tick? Why do some of a city's poorest neighborhoods have cleaner streets and less vandalism than many of its more affluent areas? The public services that make certain neighborhoods stand out are often provided by the local residents themselves - but what makes them take action?
