Al Capone spending. The key to Capone's conviction on tax charges was proving his income, and the most valuable evidence in that regard originated in his offer to pay tax. Ralph, his brother and a gangster in his own right, was tried for tax evasion in 1930. Ralph spent the next three years in prison after being convicted in a two-week trial over which Wilkerson presided. Capone ordered his lawyer to regularize his tax position. Crucially, during the ultimately abortive negotiations that followed, his lawyer stated the income that Capone was willing to pay tax on for various years, admitting income of
Al Capone signaled for accomplices armed with machine guns and shotguns. Photos of the slain victims shocked the public and damaged Capone's reputation. Within days, Capone received a summons to testify before a Chicago grand jury on charges of federal Prohibition violations, but he claimed to be too unwell to attend. Capone was primarily known for ordering other men to do his dirty work for him. One story, however, has Capone, having discovered that three of his men—Scalise, Anselmi, and Giunta—were conspiring against him with a rival gangster, Joe Aiello, reportedly arranging for the conspirators to dine with him and his bodyguards.