The Biennio Rosso (English: "Red Biennium" or "Two Red Years") was a two-year period, between 1919 and 1920, of intense social conflict in Italy, following the First World War.[1] The revolutionary period was followed by the violent reaction of the fascistblackshirts militia and eventually by the March on Rome of Benito Mussolini in 1922.
^Brunella Dalla Casa, Composizione di classe, rivendicazioni e professionalità nelle lotte del "biennio rosso" a Bologna, in: AA. VV, Bologna 1920; le origini del fascismo, a cura di Luciano Casali, Cappelli, Bologna 1982, p. 179.