Born in Brooklyn, New York, in 1899, of an immigrant family, Al Capone quit school after the sixth grade and associated with a notorious street gang, becoming accepted as a member. Johnny Torrio was the street gang leader and among the other members was Lucky Luciano, who would later attain his own notoriety.
About 1920, at Torrio's invitation, Capone joined Torrio in Chicago where he had become an influential lieutenant in the Colosimo mob. The rackets spawned by enactment of the Prohibition Amendment, illegal brewing, distilling and distribution of beer and liquor, were viewed as "growth industries." Torrio, abetted by Al Capone, intended to take full advantage of opportunities. The mobs also developed interests in legitimate businesses, in the cleaning and dyeing field, and cultivated influence with receptive public officials, labor unions and employees' associations.
Torrio soon succeeded to full leadership of the gang with the violent demise of Big Jim Colosimo, and Capone gained experience and expertise as his strong right arm.