In 1925, Torrio was severely injured in an attack by the North Side Gang; he turned over his business to Capone and returned to Italy. During the Prohibition Era, Capone controlled large portions of the Chicago underworld, which provided The Outfit with an estimated US$100 million per year in revenue. This wealth was generated through numerous illegal vice enterprises, such as gambling and prostitution; the highest revenue was generated by the sale of liquor.
His transportation network moved smuggled liquor from the rum-runners of the East Coast, The Purple Gang in Detroit, who brought liquor in from Canada, with help from Belle River native Blaise Diesbourg, also known as "King Canada", and local production which came from Midwestern moonshine operations and illegal breweries. With the revenues gained by his bootlegging operation, Capone increased his grip on the political and law-enforcement establishments in Chicago. He made his headquarters at Chicago's Lexington Hotel; after the St. Valentine's Day Massacre, it was nicknamed "Capone's Castle".
The organized corruption included the bribing of Chicago Mayor William "Big Bill" Hale Thompson, and Capone's gang operated largely free from legal intrusion. He operated casinos and speakeasies throughout the city. With his wealth, he indulged in custom suits, cigars, gourmet food and drink (his preferred liquor was Templeton Rye from Iowa), jewelry, and female companionship. He garnered media attention, to which his favorite responses were "I am just a businessman, giving the people