Police History 233 Murder 153 Investigation 140 Law enforcement 139 Crime 90 Police administration 79 更多 ... Police-community relations 74 Politics and government 55 Complaints against 52 Social conditions 52 Criminal justice, Administration of 46 Crimes against 45 Crime prevention 43 Prevention 33 Policia 32 Police corruption 31 Criminal investigation 29 Internal security 27 Missing persons 27 Police misconduct 27 Police brutality 26 Human rights 25 Political aspects 25 Attitudes 24 Policewomen 23 Race relations 23 Job stress 22 National security 21 African Americans 20 少 ...