On The Glenn Show, Glenn and Mark talk crime and punishment. Mark points out that few people in the larger social service world consider crime prevention to be part of their mission. They debate NYC’s “stop and frisk” policing and that city’s low homicide rate compared to Chicago. Mark reviews his research on crime prevention, where he aims to get the criminal justice system to “act like a halfway decent parent.” Mark argues that his methods, while effective, are not politically popular because they’re neither mean nor generous. Finally, Glenn challenges Mark on the moral aspects of his theory of crime reduction.