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
Al Capone Johns Hopkins Hospital in Baltimore for the treatment of paresis (caused by late-stage syphilis). Hopkins refused to admit him based solely on his reputation, but Union Memorial Hospital accepted him. Capone was grateful for the compassionate care that he received and donated two Japanese weeping cherry trees to Union Memorial Hospital in 1939. A very sickly Capone left Baltimore on March 20, 1940, after a few weeks inpatient and a few weeks outpatient, for Palm Island, Florida. In 1946, his physician and a Baltimore psychiatrist performed examinations and concluded that Capone had the mentality of a 12-year-old child. Capone spent