Mussolini visited Sicily after taking power. He was touring one town, surrounded by guards, when the local Don said 'You are with me, you do not need these police'. Mussolini rebuffed the Don's protection, and the Don told his people to go home and not listen to Mussolini's speech. His ego bruised, Mussolini called in the dogs.
A new Prefect was sent, Cesare Mori, with an order by Mussolini to control Sicily by any means necessary. "Your Excellency has
carte blanche, the authority of the State must absolutely, I repeat absolutely, be re-established in Sicily. If the laws still in force hinder you, this will be no problem, as we will draw up new laws."
Mori had a very simple solution, he put everyone in jail even suspected of being a member of or helping 'The Black Hand' oppose the Fascist attempts to break the ancient law of water rights in Sicily and modernize beyond the Mafiosi-Landowner suppression of the population. Mario Puzo, the man who wrote The Godfather, wrote a very interesting book explaining the backstory of how the Mafia operated during this time in 'The Sicilian' which I can mine for some names and dates if you'd like.
And the jails began to fill, and the Mafia was suppressed for one of the few times in the island's history. But trying to get the Mafia out of Sicily is like trying to get the Catholics out of Rome; easier said than done.All this makes the Mafia the sworn enemy of Mussolini. Creating many interesting sub-points.
First, the Normandie, the largest ocean liner in the world, burns and sinks in New York Harbor under mysterious circumstances and rumors of sabotage.
The president of the United States, Franklin Delano Roosevelt, demanded something be done about this and dock security increased. His aides, knowing the true problem, asked Roosevelt who controlled the docks while he was governor of New York? Roosevelt immediately understood they'd have to cut a deal with the Mob.
First is the deal cut between OSS and Charles 'Lucky' Luciano. Luciano is the most powerful Mafia don in America before, during, and after WWII. Period. And this is despite the fact he was serving a jail sentence. Following Roosevelt's mandate that the waterfronts be protected, the US government approached Meyer Lansky - a Jew who sat at Arnold Rothstein's knee with Luciano and who was Luciano's greatest and most valuable ally as 'The Mob's Accountant' - about cutting a deal to have the Mafia control the East Coast waterfronts that they controlled anyway.
Lansky said something could probably be done, but Luciano would need to be moved to a less secure prison much closer to New York City; which was done almost immediately. In return, Luciano guaranteed there would be no dock strikes for the duration of the war, any suspicious activity would be suppressed or reported.
Secondly, when Patton lands in Sicily his OSS contacts are wearing armbands of yellow silk with an elaborate 'L' for 'Luciano' in black. The reason Patton was able to move through Sicily so quickly is 'General Mafia' was leading him through the goat paths known only to the Mafia smugglers who kept them secret from the authorities.
BTW, according to the official report, the Normandie sunk by accident. According to Luciano, Albert Anastasia 'The Lord High Executioner' of the Mob's dedicated hit squad 'Murder Incorporated', had one of his Crews sink the ship to create a threat on the docks only the Mob could handle.
Luciano is released from prison and extradited back to Italy following the war, which leaves Luciano with very hard feelings. He has Bugsy Segal whacked in Las Vegas for stealing from the mob while building the Flamingo Hotel; and Luciano and Lansky go all in on an plan to make Cuba the most decadent and oppulent destination on earth. Enter Fidel Castro and his killer friend, Che Guevara.
And, please remember, the head of the FBI, J. Edgar Hoover, SWORE to the American people where was no such thing as Organized Crime in America. And he held onto this stance until Bobby Kennedy - whose brother was elected president of the United States because the Chicago Mob stuffed the ballot boxes and gave Chicago to Kennedy - made war upon the Mob, and probably cost he and his brother his life for doing so. Why? The Mob had photos of Hoover dressed in women's clothes and engaging in very, very compromising homosexual relationships for that day and time that would cost him his career. And Hoover was all about Hoover's career.
Back to our story: When the Allies controlled Sicily, they assumed everyone in prison was an enemy of Mussolini, and they were all immediately restored to their former positions; which means the Allies put the Mafia back in business in Sicily for the duration of the war and the post-war rebuilding.