Before there was the Black Mafia Family, gang violence over drug trade began with The Young Boys Incorporated. The Young Boys were one of the largest traffickers of heroine in the city and were known for notorious violence within the community. Butch Jones was the leader of the Young Boys. From this time period in the 1970s, violence in Detroit began to grow steadily. This can be seen in the FBI crime statistics sheet below. Gangs such as BMF would carry on the violence and encourage the growth of new gangs. Violence in Detroit decreased between 1976 to 1978, but then grew again once YBI and other games came into play and grew in power.