Who are the police? What jobs do they perform? Why do they behave as they do? Twenty years ago William Westley answered these questions by making a study of the municipal police force in a midwestern city, which has proved to be one of the pioneering works in the field. In it he takes a deep look at the nature of police activities ("dirty work," training, traffic, patrol, detective), how the police are organized and function, the kind of men they...