Following an introductory paper on social changes, crime, and the police, three papers discuss the validity of the British policing model, how police authority to use force impacts human rights, and political influences on the police. Seven papers on the effect of social changes upon crime consider the topics of street gangs, problems of official social control in Finland, criminal violence in Brazil, policing in the former German Democratic Republic (East Germany), and the problems of controlling organizational crime. Eight papers focus on the effect of social changes on the police. All of the papers note that social changes in the various countries discussed have fueled crime and challenged the police to make the training and organizational changes required to improve crime-control effectiveness. Four papers discuss topics related to police/community relations, and five papers address police training efforts in various countries. Implications for policing of the new economic integration of the European countries are discussed in four papers. The concluding section of five papers considers the criminogenic effects of social change and implications for crime prevention. References and relevant data accompany the papers.