Chicago racketeerJames "Big Jim" Colosimo brings his nephew Johnny Torrio, then with New York City's Five Points Gang, to eliminate the Black Hand from the city in response to their extortion demands. Within a month, ten Black Hand extortionists had been killed.
Jim Cosmano, a major Chicago Black Hand leader, is severely wounded in an ambush by Johnny Torrio on a South Side bridge. Cosmano had previously demanded $10,000 threatening to destroy Colosimo's cafe.
January 1 – March 26, 1911 – Thirty-eight Black Hand victims are killed by Black Hand assassins, many by the unidentified assassin known only as Shotgun Man, between Oak Street and Milton Street in Chicago's Little Italy.
April 1 – Spanish Louie, a lieutenant of Humpty Jackson, is killed while walking on East 11th Street by an unknown gunman (although other sources have incorrectly claimed 1900 and 1911).[2]