Members of the movement were frequently denounced as terrorists and it was claimed that Della Chiaie had links to bomb making concerns in Spain . The group also had close links with Ordine Nuovo and other extremist groups . Vincenzo Vinciguerra was a notorious member of the group . The group was adjudged responsible for a series of bomb attacks in Italy in 1969 , the most notorious of which was the Piazza Fontana bombing . The group also took a leading role in the abortive coup attempt by Junio Valerio Borghese the following year
Piazza Fontana bombing
Piazza Fontana bombing
National Vanguard (Italy)