In Montreal, and particularly in jazz clubs, alcohol flows freely and some tourists take the opportunity to bring it back to the United States, and a trade as lucrative as it is illegal is set up between the two countries. It's not just Samuel Bronfman who made his fortune in contraband, there's also Rufus Rockhead.

This former porter made his fortune smuggling alcohol for Al Capone. In 1928, he bought the Mountain Tavern in Little Burgundy, which stands at the corner of Saint-Antoine and de la Montagne streets. Quickly, he transformed the second and third floors into a cabaret, and even if at the time it was impossible for a black man to obtain a liquor license, Rockhead called on friends in good places and became the first black man in Montreal to get his license. After three years, the Mountain Tavern becomes Rockhead's Paradise.

https://www.ledevoir.com/societe/424223/un-enfant-du-harlem-du-nord