After killing Castellano, Gotti succeeded him as the leader of the Gambino family, and went on to become one of the notorious mob bosses in history. The federal government took Gotti to trial three times in the late ‘80s, failing each time to get a conviction. Gotti’s seeming inability to be charged earned him the nickname “Teflon Don.” In 1992, the government finally convicted Gotti on numerous charges, including Castellano’s murder.
One of the important witnesses in the 1992 conviction was Salvatore Gravano, a former member of the Gambino family. He testified that he sat in the car with Gotti during Castellano’s assassination and that they used walkie-talkies to notify the gunmen when Castellano’s limo was approaching.
Blum says that after 9/11, the federal government and the media became less focused on the mob, which continued to operate in the shadows. But it stepped back into the spotlight in March 2019, when Frank Cali, another reputed Gambino boss, was executed in a hail of gunfire outside his home in Staten Island. The murder marked the first assassination of a New York City mob boss since Castellano’s.
"We thought those days were over,” New York City mayor Bill de Blasio said at a press conference after Cali's murder. “Very surprising, but I guess old habits die hard."