For more than 120 years, gangs – often unfettered, often downright brazen – have operated in Chicago. In earlier days, a booze-and-bullets period celebrated in noir novels and in Hollywood thrillers, gangsters and pimps operated openly, sometimes proudly, in the city’s streets. Racketeers ran wild – and ran houses of prostitution and gambling dens. They were known by monikers like Bloody, The Devil, and Shotgun Man. Or they went by their real names: Al Capone and John Dillinger.