This Newsday story contains many fascinating details about a mob plot to assassinate then-prosecutor Rudy Giuliani in 1986. Here's the key quote:
In September 1987, [alleged FBI double agent Roy] DeVecchio reported that [Colombo captain Gregory] Scarpa told him that the five mob families talked about killing Giuliani approximately a year earlier, said [FBI agent William] Bolinder. It was in September 1986 that Giuliani's staff at the Manhattan U.S. attorney's office prosecuted bosses of La Cosa Nostra families in the so-called 'Commission' case. The Commission trial, a springboard for Giuliani's reputation as a crime buster, resulted in the conviction in October 1986 of Colombo boss Carmine Persico, Lucchese boss Anthony Corallo and Genovese street boss Anthony Salerno. Gambino boss Paul Castellano was assassinated in December 1985 and the case against Bonanno boss Philip Rastelli was dropped. The purported discussion about murdering Giuliani wasn't the first time he was targeted. In an interview in 1985 Giuliani stated that Albanian drug dealers plotted to kill him and two other officials. A murder contract price of $400,000 was allegedly offered by convicted heroin dealer Zhevedet Lika for the deaths of prosecutor Alan Cohen and DEA agent Jack Delmore, said Giuliani. Neither Cohen nor Delmore were harmed.
In the end, of course, Giuliani defeated his targets. That's what tends to happen, actually. Also: Can you believe how much hair Rudy had in the '80s?