 Cosmano and other Black Handers, including James "The Mad Bomber" Belcastro, preyed on the residents of Chicago's Little Italy and other city neighborhoods at the turn of the 20th century.In 1910, Cosmano tried to extort money out of James "Big Jim" Colosimo, a powerful brothel owner in the Levee section of Chicago.Cosmano threatened to beat up Colosimo's prostitutes and their customers if he did not receive $50,000 a week.