In montrel, the first haitian gang started in the end-70s. But they were teens. Ans during all the 80s they were doing some crime here and there. But its really in the early 90s that they really became a big factor, wi the generation of gangs like Neg-BO (called Bo-Gars in the news) and CDP.

Before that it was mostly the jamaican gangs and black-anglo gangs in the western part of montreal that were more active in the city. From the 60s to the end of the 2000s.
Many jamaican gangs worked or sometime were at war with the irish mob (west end gang).
You also had many black-anglo that were working for the italian mafia.
Guys like Leslie Coleman who was an enforcer for the Cotroni Family. When Coleman died in the 2000s, Joe Di Maulo paid for the funerals and gave a good some of money to the family.

Also, you had Rufus Rockhead who had the first and for a time the only black club in Montreal. He was a jamaican-born hustler who succeed to have an alcohol permit in montreal, during a time that black didn’t have nothing. We are talking about the 30s, 40s, 50s etc.
He was a bootlegger during the prohibition in the US. And some rumors say he was working with Al Capone. And even Capone came to his club in Montreal (but who knows…)