Police History 193 Murder 147 Investigation 135 Law enforcement 126 Crime 78 Police administration 78 more ... Police-community relations 65 Politics and government 53 Complaints against 48 Social conditions 44 Crimes against 43 Criminal justice, Administration of 40 Crime prevention 38 Prevention 33 Police corruption 30 Internal security 26 Criminal investigation 25 Missing persons 25 Job stress 24 Attitudes 23 Human rights 23 Police brutality 23 Police misconduct 23 Policewomen 21 Political aspects 20 Police psychology 19 Race relations 19 Criminals 18 Drug traffic 17 less ...