1927-1998 1953- 1982- 1990-1993 bobby children congresses contributionsinlawluhmann contributionsinpoliticalscienceluhmann crimesagainst criticaltheory criticismandinterpretationluhmann deathandburialbulger drama england investigation james jon juvenilehomicide luhmann murder phenomenology philosophy rådström sefton socialsystems sociologicaljurisprudence sociology systemtheory thompson venables violenceinchildren