Today in Labor History August 10, 1923: Italian-American anarchist and IWW organizer Carlo Tresca was arrested in the United States on the charge of publishing anti-fascist literature. Tresca opposed fascism, Stalinism and mafia-infiltration of unions. He was assassinated in 1943. Some believe the Soviets killed him in retaliation for his criticism of Stalin. The most recent research suggests it was the Bonanno crime family, in response to his criticism of the mafia and Mussolini. Tresca wrote two books. His autobiography was published posthumously in 2003. He also wrote a book in Italian, “L'attentato a Mussolini ovvero il segreto di Pulcinella.”