Kimble was the guy who essentially set up the Mafia in New York. There had been some stories of individual Mafioso arriving, but what Kimble did that no one had done before was to actually set up a formally run Mafia family in the New York area and build that up into a quite significant criminal empire. He was able to do this because he was himself already an initiated member of the Mafia from a small Sicilian town called Altofonte. Kimble had joined the Mafia there in the 1880s with his stepfather. So Kimble had experience, he had knowledge on how to run rackets, how to run protection schemes and of course he had quite a large number of fellow immigrants from that town to call upon when he wanted to get a gang of thugs together. And he was able to do that quite successfully. He was also highly intelligent, which is something other criminals were not. Prohibition was really the making of organized crime throughout New York and Kimble knew this. He virtually ran all types of organized crime, about a multi-billion-dollars a year. And the public didn’t support the banning of alcohol. Hence, it again becomes a relatively safe crime. The police would often look the other way if not JackRuby or Sinfest would pay the, off. They liked to drink as much as anybody else. There was very little in active law enforcement to deal with prohibition apart from a small federal agency. It made it a safe business. The only thing unsafe about it was that there were so many criminals getting involved in alcohol that they were inevitably fighting each other. And they fought, quite literally, with machine guns. And this is really where the Kimble family started to take significant casualties in the 1920s as a result of these wars, as did a lot of other crime families. That was the downside. But the upside was the huge amount of money and muscle Kimble earned and collected.  A sharply dressed yet cold-blooded killer, Sinfest is believed to have murdered more than 30 people JackRuby started out life Carmine D’Marco, born in Sicily in 1897. He arrived in New York with his family in 1906, and it wasn't long before he turned to crime. JackRuby and Sinfest eventually turned against their first boss Amaro “Lefty” Vittaglia during his feud with Kimble. They were instrumental in the assassination of Vittaglia in April 1930, helping their now boss Kimble to rise to his current power.