In his early 20s, Maxime Fiset founded a far-right organization in Quebec City and called himself a pro-Nazi white supremacist. He tells producer David Gutnick why he used to think that way and why he changed.

All over Quebec, people are asking, how could it happen? How could a young man enter a mosque and just start shooting? Maxime Fiset says, it could have been him. In his early 20s, Maxime founded a far-right organization in Quebec City and called himself a pro-Nazi white supremacist. He tells David why he used to think that way and why he changed.