In the early 1990s, Maurice Mom Boucher and his fellow Montreal Hells Angels, reputedly the most ruthless and vicious bikers in the world, subdued all comers except the tough-as-nails members of the Rock Machine. Founded by Salvatore Cazzetta, an ex-friend of Boucher, the Rock Machine had every intention of standing up against the Hells Angels. Seven years of bloody conflict, which left over 160 people dead and countless injured, was the result.