After the arrest of Mafia boss Totò Riina in January 1993 , the remaining bosses , among them La Barbera , Giuseppe Graviano , Matteo Messina Denaro , Giovanni Brusca , Leoluca Bagarella , and Antonino Gioè , came together a few times ( often in the Santa Flavia area in Bagheria , on an estate owned by the mafioso Leonardo Greco ) . They decided on a strategy to force the Italian state to retreat . That resulted in a series of bomb attacks in 1993 in the Via dei Georgofili in Florence , in Via Palestro in Milan and in the Piazza San Giovanni in Laterano , and Via San Teodoro in Rome , which left 10 people dead and 93 injured as well as damage to centres of cultural heritage such as the Uffizi Gallery
Via dei Georgofili
Via dei Georgofili bombing
Gioacchino La Barbera