What does Wagner have to do with the Sicilian mafia?
From Hidden Power: The Strategic Logic of Organized Crime (pp. 197-198):
"In mid-October 1957, an extraordinary summit was called at the Grand Hotel et Des Palmes, an opulent Belle Époque hotel near the Palermo waterfront. Twenty-seven top American Mob and Sicilian mafia leaders met over several days in the Sala Wagner, named because the composer had orchestrated his last opera, Parsifal, there.[fn omitted] The summit, chaired by Lucky Luciano, aimed to sort out the mess created by the shifting balance of power within the Sicilian mafia. Whatever else was agreed at that meeting, it is clear from the testimony of one of the Sicilian leaders present that one major piece of strategic advice was taken on board ... to copy Luciano’s organizational innovations of a quarter century earlier and adopt a ‘commission’ structure to govern the Sicilian mafia. It was a clear message: if you want to continue to do business with us in America, and grow the profits of transatlantic drug trafficking, you need to get your house in order. Soon afterwards, the Sicilian Cupola system was born..."