There is a reason that may help explain how the extreme erratic and abusive stalker fan behavior happens in all cities.
You could probably pin it down, for the most part, to the deinstitutionalization of mental patients that has evolved since the time of the civil rights movement in the US and that industrialized nations have adopted as a prevalent model:
“Three forces drove the movement of people with severe mental illness from hospitals into the community: the belief that mental hospitals were cruel and inhumane; the hope that new antipsychotic medications offered a cure; and the desire to save money. It has not worked out as well as expected on any of the three fronts. “
Deinstitutionalization of People with Mental Illness: Causes and Consequences
You really have to have the profile of a mental patient to go and harass Petry’s wife and her kids. Just cause you may not have been diagnosed yet, doesn’t it make it any less egregious.
I submit that these mental patients can appear as the rabid fans of any sports team. It’s not exclusively a Montreal phenomenon.