Members and a leader of Movimento Politico Ordine Nuovo were involved in several terrorist attacks, such as the 1969 Piazza Fontana bombing.

The extreme right-wing organization here referred to, whose members were also nicknamed ordinovisti, though being the political opposite of the earlier ones, was born from an internal current and then a schism in the Movimento Sociale Italiano (MSI).

In 1954 Arturo Michelini, a moderate seeking an alliance with the Italian Monarchic Party, and possibly with the Christian Democracy, became general secretary of the MSI.

"[2] ON's publications valorized the defeated Axis powers and prewar Fascist movements, as well as the Organisation armée secrète and the militaries of South Africa and Rhodesia, among others.

[6] Ordine Nuovo had an aboveground existence as a political activist group, but its members also engaged in street-fighting (squadrismo) and became involved in several coup attempts and terrorist attacks.

Several members of Movimento Politico Ordine Nuovo, including one of its leaders, Pierluigi Concutelli,[12] participated in terrorist attacks.

Ordine Nuovo member Delfo Zorzi was among those convicted for the crime on June 20, 2001, together with Carlo Maria Maggi and Giancarlo Rognoni, but all were later found not guilty in 2004.