See also: 1923 in organized crime, other events of 1924, 1925 in organized crime and the list of 'years in Organized Crime'.

Events

• Westside O'Donnell leader Walter O'Donnell is charged with the murder of Alfred Deckman but is later acquitted.
• Joseph Bonanno arrives in New York from Sicily.
• April 1 - Frank Capone , brother of Al Capone, is killed by police during the fighting which broke out while leading around 200 gunmen into Cicero during the 1924 Chicago Elections in support of Mafia backed Republican politicians.
• September 7 - Southside O'Donnell gunman Jerry O'Connor is killed by Frank McErlane.
• November 10 - North Side Gang leader Dion O'Banion is killed when three unidentified men enter his flower shop and shoot him several times. This begins a five year gang war between the North Side Gang, under Hymie Weiss, against Al Capone's Chicago Outfit that would end with the St. Valentine's Day Massacre in 1929.

Arts and literature

Births

Deaths

• Alfred Deckman , Westside O'Donnell associate
• April 1 - Frank Capone , Chicago Outfit member
• September 7 - Jerry O'Connor , Southside O'Donnell gunman
• November 10 - Dion O'Banion, North Side Gang leader