Book excerpt: This book examines the structural, organization and operational costs, regional distribution of crime property losses and recoveries, arrests and convictions, and training. The American police problem is clearly defined and related to crime control, civic appraisal, and public demands. Police today need more and more to reexamine the basic assumptions concerning the exercise of their authority. The police, if they are to be a profession, must be able to establish themselves as enforcers rather than as evaders of our criminal codes.