This report analyzes the National Survey of Victimization and Perception of Public Security to further our understanding of the dynamics of police legitimacy. The report is divided into three parts. The first focuses on the national and state contexts of crime over time and their impact on individual experiences and attitudes toward crime. Part two analyzes citizen satisfaction with police, emphasizing in particular their perceptions of police ineffectiveness and corruption as well as their distrust of local and federal police forces. Finally, part three approaches police legitimacy and citizen cooperation with police by evaluating the impact of three policies related to police professionalization.