ww2 By dorachan23 1919 extreme radicalism Period: 1919 to 1922 Black shirts terrorise opponents 1921 parliamentary elections 1922 extreme conservatism 1922 Mussolini become prime minister Period: 1922 to 1943 kingdom of Italy Period: Oct 28, 1922 to Oct 14, 1922 march on Rome 1923 acerbo law 1925 murder of socialist leader 1945 Death of Mussolini