strongarm repression of dissent. He was even said to have originated the practice of forcibly dosing opponents with large amounts of castor oil, a very effective laxative, to humiliate, disable or kill them, a practice which became a common tool of Mussolini's blackshirts. D'Annunzio advocated an expansionist Italian foreign policy and applauded the invasion of Ethiopia. Rivalry with Mussolini As John Whittam notes in his essay "Mussolini and The Cult of the Leader": This famous poet, novelist and war hero was a self-proclaimed Superman. He was the outstanding interventionist in May 1915 and his dramatic exploits during the war won him national and international acclaim. In September 1919 he gathered together his 'legions' and captured the disputed seaport of Fiume. He held it for over a year and it was he who popularised the black shirts, the balcony speeches, the promulgation of ambitious charters and the entire choreography of street parades and ceremonies. He even planned a march on Rome. One historian had rightly described him as the 'First Duce' and Mussolini must have heaved a sigh of relief when he was driven from Fiume in December 1920 and his followers were dispersed. But he remained a threat to Mussolini and in 1921 Fascists like Balbo seriously considered turning to him for leadership. In contrast Mussolini vacillated from left to right at this time. Although Mussolini's fascism was heavily influenced by the Carta del Carnaro, the constitution for Fiume written by Alceste De Ambris and D'Annunzio, neither wanted to play an active part in the new movement, both refusing when asked by Fascist supporters to run in the elections of 15 May 1921. Before the March on Rome, De Ambris even went so far as to depict the Fascist movement as: "a filthy pawn in Mister Giolitti's game of chess, and made out of the least dignified section of the bourgeoisie". D'Annunzio was seriously injured when he fell out of a window on 13 August 1922; subsequently the planned "meeting for national pacification" with Francesco Saverio Nitti and Mussolini was cancelled. The incident was never explained and is considered by some historians an attempt to murder him, motivated by his popularity. Despite D'Annunzio's retreat from active public life after this event, the Duce still found it necessary to regularly dole out funds to D'Annunzio as a bribe for not re-entering the political arena. When asked about this by a close