In the same year as the Valentines day Massacre (1929) Capone opened a soup kitchen to feed the Chicago poor left vulnerable after the Wall St. Crash.
1931: Capone was purchased by federal agent Elliot Ness and ended up finally going to jail for income tax evasion.
1939: Capone was released on good behaviour (and because he'd been suffering from syphilis related ailments)
Capone retired to his estate in Florida and died in 1947 of heart failure.