 Severino Di Giovanni's first direct action took place on 6 June 1925, during the celebration of the 25th anniversary of Victor Emmanuel III's accession to the Italian throne, which took place at the Teatro Colón.President Alvear, his wife, opera singer Regina Pacini, and Count Luigi Aldrovandi Marescotti, ambassador of Fascist Italy, were present at the act, as well as numerous Black shirts put in place by Marescotti to prevent any disorder.When the orchestra started the Italian hymn, Giovanni and his companions threw leaflets around, at the cries of "Assassins!