Al Capone Mabel Walker Willebrandt recognized that mob figures publicly led lavish lifestyles yet never filed tax returns, and thus could be convicted of tax evasion without requiring hard evidence to get testimony about their other crimes. She tested this approach by prosecuting a South Carolina bootlegger. In 1927, the Supreme Court ruled in "United States v. Sullivan" that illegally earned income was subject to income tax; Justice Oliver Wendell Holmes Jr. rejected the argument that the Fifth Amendment protected criminals from reporting illegal income. The IRS special investigation unit chose Frank J. Wilson to investigate Capone, with the focus on his
1917 in organized crime nickname of "Scarface," a name he personally hated. 1917 in organized crime "See also:" 1916 in organized crime, other events of 1917, 1918 in organized crime and the list of 'years in Organized Crime'. It was through the Five Points gang that Al Capone came to the attention of brutal New York mobster Frankie Yale. In 1917, 18-year-old Al Capone went to work for Yale at the Harvard Inn as a bartender and as a waiter and bouncer when needed. Capone watched and learned as Yale used violence to maintain control over his empire. One day while working at the