Police History 224 Law enforcement 159 Murder 144 Investigation 119 Police-community relations 115 Crime 99 more ... Police administration 89 Criminal investigation 86 Criminal justice, Administration of 57 Complaints against 55 Politics and government 55 Social conditions 55 Crimes against 38 Police misconduct 38 Video recordings for the hearing impaired 38 Policía 36 Crime prevention 35 Criminals 34 Policewomen 33 Prevention 33 Polizei 32 African Americans 31 Application 30 Lois 30 Undercover operations 30 Police brutality 29 Terrorism 29 Man-woman relationships 28 Mystery fiction 28 less ...