I remember that song but sorry dont remember the name, im sure somebody will come up with the answer. Have you checked the credits at the end of the episode. 
The Mafia Is Not Primarily An Organisation Of Murderers.
First And Foremost,The Mafia Is Made Up Of Thieves.
It Is Driven By Greed And Controlled By Fear.
Between The Law And The Mafia, The Law Is Not The Most To Be Feared
"What if the Mafia were not an organization but a widespread Sicilian attitude of hostility towards the law?"
"Make Love Not War" John Lennon
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