HALIFAX—More than seven weeks after a man disguised as a Mountie killed 22 people in rural Nova Scotia, the RCMP have finally hinted at what may have motivated one of the worst mass killings in Canadian history.
Last week, RCMP Supt. Darren Campbell told a briefing that a behavioural analysis of the killer determined he was an “injustice collector”—a term that is well known among criminologists.
