The crime was shocking. According to police, Scott McGillivary stepped outside his Winnipeg home for a cigarette on Aug. 11, noticed two young men in his backyard, told them to leave, and was shot dead. Now, the Winnipeg Free Press reports that the accused killers, a 15-year-old and a 17-year-old, had been involved in 18 sentencing hearings related to 39 separate criminal charges since 2005. Their offences ranged from car theft to assault, and they repeatedly violated court orders. If ever a case raised questions about revolving-door justice, this is it.