 Complete the following phrase:  The Mafia retaliated violently. In 1988, they murdered a Palermo judge and his son; three years later, a prosecutor and an anti-mafia businessman were also murdered. Salvatore Lima, a close political ally of the Mafia, was murdered for failing to reverse the convictions as promised. Falcone was killed on May 23, 1992 with 400 kg of TNT positioned under the highway near Capaci, Sicily. Borsellino was also 