The Chicago mob, also known as the Chicago Outfit, is a criminal organization that emerged in the early 20th century. It became prominent during the Prohibition era when illegal activities like bootlegging and gambling flourished. Key figures in the mob included Al Capone, who became infamous for his involvement in organized crime and violence. Over the years, the Chicago mob expanded its operations into various illegal enterprises, including drug trafficking and extortion. Law enforcement efforts, particularly during the 1950s and 1960s, aimed to dismantle the organization, leading to numerous arrests and convictions of mob leaders. Despite these efforts, the Chicago Outfit remains a significant part of the city's history.