Capone was born in New York City in 1899 to Italian immigrant parents. He joined the Five Points Gang as a teenager and became a bouncer in organized crime premises such as brothels. In his early twenties, he moved to Chicago and became a bodyguard and trusted factotum for Johnny Torrio, head of a criminal syndicate that illegally supplied alcohol—the forerunner of the Outfit—and was politically protected through the Unione Siciliana. A conflict with the North Side Gang was instrumental in Capone's rise and fall. Torrio went into retirement after North Side gunmen almost killed him, handing control to Capone. Capone expanded the bootlegging business through increasingly violent means, but his mutually profitable relationships with mayor William Hale Thompson and the city's police meant he seemed safe from law enforcement.
He developed a rivalry with New York bootlegger Luca Changretta, during the 1920s.
Capone made a deal with the Peaky Blinders and had Changretta killed to take over his bootlegging operations in New York. The Blinders begin to supply Capone with alcohol soon thereafter.