Police accountability

Police accountability involves holding both individual police officers, as well as law enforcement agencies responsible for effectively delivering basic services of crime control and maintaining order, while treating individuals fairly and within the bounds of law. Police are expected to uphold laws, regarding due process, search and seizure, arrests, discrimination, as well as other laws relating to equal employment, sexual harassment, etc. Holding police accountable is important for maintaining the public's "faith in the system". Research has shown that the public prefers independent review of complaints against law enforcement, rather than relying on police departments to conduct internal investigations. There is suggestion that such oversight would improve the public's view on the way in which police officers are held accountable.

Early efforts at police reform often involved external commissions, such as the Wickersham Commission, that spelled out reforms but left to the police to implement them, often with limited success.

A series of U.S. Supreme Court decisions under the Warren Court led to important changes in policing, with respect to civil rights and constitutional law. Mapp v. Ohio in 1961 and Miranda v. Arizona in 1966 were two highly influential court decisions.Mapp v. Ohio found that evidence obtained in violation of the Fourth Amendment protection against "unreasonable searches and seizures" may not be used in criminal prosecutions. Miranda v. Arizona required that criminal suspects must be informed of their right to consult with an attorney and of their right against self-incrimination prior to questioning by police. These decisions began to set national standards for policing.

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