Benito Mussolini and the Italian Socialist Party: from party membership to political enmity

Benito Mussolini and the Italian Socialist Party are joined first by political intimacy and then by a rupture that becomes central to Mussolini’s transformation. Once a socialist agitator and editor of Avanti!, he turns against the party after his expulsion, yet carries forward its language of action, revolution, and mass politics. As the Socialists win votes and expand their influence, Mussolini recasts their strength as both a danger and an opportunity: their promised revolution, he argues, will expose their inability to act, while anti-socialist fear can bring new constituencies to his side.

From Socialist Agitator to Political Enemy

Before the break, Mussolini’s public identity was bound to revolutionary socialism. The narrative recalls his old slogan that a bomb was worth more than a hundred rallies as a battle cry from the period when he preached socialist revolution. After the rupture, the same words return in a different setting: he repeats them in a flat voice before his newspaper staff and guards, now as editor of Il Popolo d’Italia. The slogan marks continuity in his preference for action, but a decisive change in the political cause to which that action is directed.

The party’s electoral success in November 1919 leaves Mussolini exposed. Avanti!, the Socialist paper he had directed for years, gives only passing and hostile notice to a report that he has died; its front page instead celebrates the birth of revolutionary Italy. Outside his small editorial office, a crowd carries what it believes to be his body through Milan’s Bottonuto district, while the living Mussolini remains inside, confronting the hostility surrounding him. The contrast is more than a personal humiliation: the party and its press appear to possess the popular momentum, while the former socialist leader has been reduced to an isolated editor presiding over a marginal movement.

That isolation does not persuade him to retreat. In December, he tells Bianca Ceccato that he has recovered his taste for fighting and takes the Socialists’ victory as the beginning of a test they are likely to fail. They have made promises and invoked Lenin, he argues, but their leaders lack the capacity to make revolution. His analysis turns electoral triumph into a forecast of weakness: if the Socialist tide recedes, he expects to demonstrate what genuine revolutionary action means. The opposition is therefore not simply a rejection of socialism; it is also a claim that Mussolini, rather than the Socialist leadership, can embody the force and decisiveness that revolutionary politics promises.

Socialism as Rival and Foil

As Mussolini’s newspaper moves rightward, his public argument increasingly distinguishes between workers and their Socialist leaders. He condemns strikes while maintaining that workers’ rights should be protected, and presents the choice as one between a bourgeois society with a long record of achievement and a proletarian politics he characterizes as inexperienced. The distinction allows him to oppose the party while continuing to address the people it claims to represent. It also makes his politics adaptable: hostility to Socialist organization can coexist with an assertion that the masses should be served and politically educated.

The narrative places that argument beside the widening reach of Socialist organization in Bologna and the surrounding countryside. A Socialist mayor encourages tenants to claim the elegant homes in which they live, while labor organizations and rural leagues shape employment, wages, and land use. By 1920, the leagues’ influence extends across much of Emilia: hiring is routed through their offices, and their authority reaches work shifts, threshing, seed supplies, and crop planting. In Ferrara, the leagues count 81,000 members and have won the power to influence working conditions, wage levels, and even crop choices. This is not presented as an abstract dispute alone. Control of work and access to bread give the conflict immediate material stakes, while Mussolini’s anti-socialist message offers landowners and the anxious middle classes a political language for resisting that control.

At the Teatro Lirico, Mussolini still publicly separates the proletariat from its Socialist leadership and insists that he does not represent a reactionary position. Yet the conciliatory opening stands beside his promise of implacability toward the Socialists. The tension is strategic and revealing: he seeks to preserve a distinction between workers and party leaders while preparing a politics increasingly organized around confrontation with the party itself.

Turning Opposition into Mobilization

By autumn 1920, Mussolini has moved from criticizing Socialist politics to presenting Fascism as a force that will resist it outside the ballot box. He persuades the national council of the fasci not to participate in local administrative elections, arguing that Fascists must assert themselves through shootings, fires, and destruction rather than join the voting process. The movement, in this formulation, is an order of fighters rather than an assembly of politicians. The choice places organized violence at the center of the relationship: electoral competition matters, but it is not the only or preferred means by which the Socialists are to be opposed.

The October demonstrations in support of Soviet Russia provide the immediate setting for a further alignment. Fascists now present themselves as defenders of the liberal state against the Reds. In Trieste, Fascists burn the offices of a Socialist newspaper without intervention from the police stationed to protect it; elsewhere, confrontations and bombings are followed by a wave of arrests. The narrative describes roughly twenty dead and seventy injured across Italy in a single day. It then records new Fascist organizations appearing in provinces where the Socialists have prevailed electorally, with local founders seeking weapons or money from the central committee. Anti-socialism is no longer only a newspaper argument: it becomes a framework for recruitment, local organization, and armed action.

From Exclusion to Parliamentary Entry

The change in Mussolini’s political position is visible in the approach to the 1921 elections. He has earlier treated the ballot box as inadequate to Fascism’s purpose, but by April he reads the acceptance of Fascist candidates into the national blocs as proof that the movement has crossed from the trenches into Parliament. Even Luigi Albertini, who had opposed their inclusion, now urges readers to accept the alliance between liberals and Fascists. Mussolini’s movement has not abandoned its anti-socialist identity; it has gained access to an electoral coalition by presenting itself as part of the wider resistance to Bolshevism.

The relationship thus takes on a double form. Mussolini’s faction uses parliamentary inclusion to gain legitimacy, while its conception of political struggle remains shaped by coercive action and the claim that the liberal state is under threat. The Socialists’ electoral strength helps create the conditions for this alliance, but the alliance also weakens the boundary between established liberal politics and a movement that has made violence a political instrument.

The Rivalry Recast as a New Order

At the founding of the National Fascist Party, Mussolini presents Fascism as a synthesis capable of absorbing liberalism and replacing the methods that preceded it. He calls for Italians to be gathered into a single national identity, links national greatness to an imperial future, and places the state at the center of political life. On the question of the masses, he rejects a simple opposition between individual heroes and collective action: the masses, in his account, need an interpreter, and Fascism will serve and educate them while disciplining them when they are wrong. This vision answers the Socialist claim to speak for workers by claiming authority over the masses as a whole.

The narrative’s recurring language of national rebirth sharpens the contrast. The returning veterans and the dead of the war become part of a story in which the old political class has exhausted its purpose and a new generation must take its place. Mussolini’s later image of himself as the new man, confronting the old politicians, transforms his earlier exclusion into a claim to embody renewal. His relationship with the Italian Socialist Party therefore ends not in simple separation but in political appropriation: he rejects its leaders, contests its hold over workers and rural communities, and redirects revolutionary energies toward a nationalist order that promises unity while legitimizing force.