On June 4, 2020, Nova Scotia RCMP said that a psychological autopsy of Gabriel Wortman found that he was an injustice collector, "one who held onto conflict or differences with others, turning them inward until they boiled over in rage."

Police say they believe revenge was a motivating factor in the killing spree on April 18 and 19, 2020, but they also say some of the gunman's victims were targeted at random.

In this episode, we learn what an injustice collector is, and we hear from people who knew the gunman about his history of violence and disputes with others.

Experts say these events are part of a pattern of behaviour that should serve as a warning sign for authorities.

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