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PALERMO, ITALY - MARCH 04: Salvatore Riina, aka Toto Riina, the most important figure of the Sicilian mafia, is brought to justice after evading police for 23 years at the Aula Bunker of Palermo courthouse on March 4, 1993 in Palermo, Italy. Riina, nicknamed 'The Beast', is being judged on almost 150 counts of murder. (Photo by Franco Origlia/Getty Images)

PALERMO, ITALY - MARCH 04:  Salvatore Riina, aka Toto Riina, the most important figure of the Sicilian mafia,  is brought to justice after evading police for 23 years at the Aula Bunker of Palermo courthouse on March 4, 1993 in Palermo, Italy. Riina, nicknamed 'The Beast', is being judged on almost 150 counts of murder.  (Photo by Franco Origlia/Getty Images)

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ROME, ITALY - APRIL 15: The wife of Salvatore Riina, aka Toto Riina, Antonietta Bagarella, aka Ninetta Bagarella, (L) and his son Giovanni Riina (R) visit the mafia boss at the prison of Rebibbia on April 15, 1993 in Rome, Italy. Riina, nicknamed 'The Beast', is being judged on almost 150 counts of murder. (Photo by Franco Origlia/Getty Images)

ROME, ITALY - APRIL 15: The wife of Salvatore Riina, aka Toto Riina, Antonietta Bagarella, aka Ninetta Bagarella, (L) and his son Giovanni Riina (R) visit the mafia boss at the prison of Rebibbia on April 15, 1993 in Rome, Italy. Riina, nicknamed 'The Beast', is being judged on almost 150 counts of murder.  (Photo by Franco Origlia/Getty Images)

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Massive march during 26th Anniversary Of The Assassination Of Judge Falcone in via Notarbartolo, Palermo, Sicily, Italy, on 23 May 2018. The 26th Anniversary Massacre of Capaci, It killed magistrate Giovanni Falcone, his wife Francesca Morvillo, and three police escort agents, Vito Schifani, Rocco Dicillo and Antonio Montinaro. (Photo by Victoria Herranz/NurPhoto via Getty Images)

Massive march during 26th Anniversary Of The Assassination Of Judge Falcone in via Notarbartolo, Palermo, Sicily, Italy, on 23 May 2018. The 26th Anniversary Massacre of Capaci, It killed magistrate Giovanni Falcone, his wife Francesca Morvillo, and three police escort agents, Vito Schifani, Rocco Dicillo and Antonio Montinaro. (Photo by Victoria Herranz/NurPhoto via Getty Images)

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PALERMO, ITALY - JULY 24: The crowd applaud at the passage of the coffins of Italian judge Paolo Borsellino and his police escort during their funerals at the Palermo Cathedral on July 24, 1992 in Palermo Italy. Borsellino and his escort were murdered a mafia bombing in Via D'Amelio, Palermo on July 19, 1992. (Photo by Franco Origlia/Getty Images)

PALERMO, ITALY - JULY 24:  The crowd applaud at the passage of the coffins of Italian judge Paolo Borsellino and his police escort during their funerals at the Palermo Cathedral on July 24, 1992 in Palermo Italy. Borsellino and his escort were murdered a mafia bombing in Via D'Amelio, Palermo on July 19, 1992.  (Photo by Franco Origlia/Getty Images)

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Students march in Palermo on May 23, 2017 to commemorate the death of Judge Giovanni Falcone. Falcone was murdered along with his wife and their security team on May 23, 1992. Falcone spent most of his career challenging the Sicilian mafia. (Photo by Victoria Herranz/NurPhoto via Getty Images)

Students march in Palermo on May 23, 2017 to commemorate the death of Judge Giovanni Falcone. Falcone was murdered along with his wife and their security team on May 23, 1992. Falcone spent most of his career challenging the Sicilian mafia. (Photo by Victoria Herranz/NurPhoto via Getty Images)