Building Trust Between the Police and the Citizens They Serve: An Internal Affairs Promising Practices Guide for Local Law Enforcement [open pdf - 3MB]
"Building and maintaining community trust is the cornerstone of successful policing and law enforcement. The building and maintenance of trust takes a great deal of continuous effort. Unfortunately, the ethical work of thousands of local law enforcement officers is easily undone by the actions of one unethical officer. Often, the indictment of one seems like an indictment of all. Once misconduct occurs, the Internal Affairs function of the law enforcement agency becomes the primary method of reassuring the community that the police can and will aggressively address and resolve unethical behavior. In short, the integrity of the police will always dictate the level of community trust. […]This guide attempts to place Internal Affairs in its proper context--not as a stand-alone activity, but as one component of a systemic, agency-wide, professional standards effort. After discussion of some of the other components necessary in the community trust continuum-hiring, training, rewarding excellent performance--the guide focuses on building an effective Internal Affairs approach for any size or type of agency. The guidelines for the Internal Affairs function address every aspect, from complaint processing to decision-making, discipline, notification, and community transparency."
COPS (Community Oriented Policing Services): http://www.cops.usdoj.gov/