Al Capone charities and was viewed by many as "modern-day Robin Hood". However, the Saint Valentine's Day Massacre, in which seven gang rivals were murdered in broad daylight, damaged Chicago's and Capone's image, leading influential citizens to demand government action and newspapers to dub Capone "Public Enemy No. 1". The federal authorities became intent on jailing Capone and prosecuted him in 1931 for tax evasion. During a highly publicized case, the judge admitted as evidence Capone's admissions of his income and unpaid taxes during prior (and ultimately abortive) negotiations to pay the government taxes he owed. He was convicted and sentenced to
Frank Capone with mobster John Torrio. By 1918, Torrio had moved to Chicago to help a relative defend his rackets, and Torrio soon asked Al and later Frank to join him there. By 1920, Torrio had taken charge of the South Side Gang and the Prohibition era had started. As the gang increased in power and wealth, so did Al and Frank. In 1923, Chicago voters elected a new mayor, William Dever, who proceeded to crack down on Torrio, the Capone brothers, and their South Side Gang. In response, Torrio tasked Al with creating speakeasies, brothels, and illegal gambling dens in Cicero,