Al Capone

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…mob. The rackets spawned by enactment of the Prohibition Amendment, illegal brewing, distilling and distribution of beer and liquor. In 1925, Capone became boss when Torrio was seriously wounded in an assassination attempt. Capone had built a fearsome reputation in the ruthless gang rivalries. That reputation grew as rival gangs were eliminated or nullified, and the suburb of Cicero became, in effect, a fiefdom of the Capone mob. (http://www.best.com/~dna/don/casehistory.html)