Black Hand (Italian: Mano Nera) was a type of extortion racket. It was a method of extortion, not a criminal organization as such, though gangsters of Camorra and the Mafia practiced it. According to a newspaper report in the New York Tribune of June 1912, the Black Hand "...really exists only as a phrase. As an organization such a thing never existed out of the minds of the police. It is a catch phrase made familiar through the newspapers, and the quick witted criminal of Latin extraction lost no time in using it as a nom de crime, which he wrote at the bottom of his blackmailing letters, sometimes - in fact, generally - adding fanciful decorations of his own, such as daggers dripping blood, revolvers spitting fire and bullets, crudely drawn skulls and crossbones and the inevitable sketch of a human hand."
The roots of the Black Hand can be traced to the Kingdom of Naples as early as the 1750s. However, the term as normally used in English specifically refers to the organization established by Italian immigrants in the United States during the 1880s who, though fluent in their Southern Italian regional dialects, had no access to Standard Italian or even a grammar school education. A minority of the immigrants formed criminal syndicates, living alongside each other. By 1900, Black Hand operations were firmly established in the Italian-American communities of major cities including New York, Philadelphia, Chicago, New Orleans, Scranton, San Francisco, Olean, NY and Detroit. In 1907, a Black Hand headquarters was discovered in Hillsville, Pennsylvania, a village located a few miles west of New Castle, Pennsylvania. The Black Hand in Hillsville established a school designed to train members in the use of the stiletto. Although more successful immigrants were usually targeted, possibly as many as 90% of Italian immigrants and workmen in New York and other communities were threatened with extortion.
Typical Black Hand tactics involved sending a letter to a victim threatening bodily harm, kidnapping, arson, or murder. The letter demanded a specified amount of money to be delivered to a specific place. It was decorated with threatening symbols like a smoking gun, hangman's noose, skull, or knife dripping with blood or piercing a human heart, and was in many instances, signed with a hand, "held up in the universal gesture of warning", imprinted or drawn in thick black ink. According to author/historian Mike Dash, "it was this last feature that inspired a journalist writing for The New York Herald to refer to the communications as "Black Hand" letters—a name that stuck, and indeed, soon became synonymous with crime in Little Italy." The term "Black Hand" (in Italian: Mano Nera, and in Sicilian: Manu Niura) was readily adopted by the American press and generalized to the idea of an organized criminal conspiracy, which came to be known as "The Black Hand Society".
The tenor Enrico Caruso received a Black Hand letter, on which a black hand and dagger were drawn, demanding $2,000. Caruso decided to pay, "and, when this fact became public knowledge, was rewarded for his capitulation with 'a stack of threatening letters a foot high,' including another from the same gang for $15,000." Realizing the extortionists would continue to demand money, he reported the incident to the police who, arranging for Caruso to drop off the money at a prearranged spot, arrested two Italian-American businessmen who retrieved the money.