In 1939 a bloody vendetta between both clans started during a brawl about a question of honour among youngsters of the two clans. The son of Giuseppe Greco, also known as "Piddu u tinenti" (Piddu the lieutenant), the boss of Croceverde Giardini cosca, was killed. In 1946-47, the bloody internal feud between the factions in Ciaculli and Croceverde Giardini reached a climax. On August 26, 1946, Giuseppe Greco, the boss of the Ciaculli clan and a brother-in-law of "Piddu u tinenti", and his brother Pietro Greco were killed with machine guns and grenades. The Ciaculli faction reacted a few months later when two of Piddu the lieutenant's men were shot with a "lupara", the typical Sicilian short-barrelled shotgun. In revenge the Giardini cosca kidnapped two members of the rival faction who were never seen again, a so-called lupara bianca.