Socialism is the most strategically misused word in modern political conversation. It is used by its enemies as a synonym for any policy that involves the state, by its allies as a synonym for any policy that helps working people, and by both as a flag of moral identity rather than as a description of a political programme. Almost none of these uses describe what the word actually means.

This piece is a short primer. The minimum definition that survives most strands. The main internal traditions, including the ones that have killed millions and the ones that have built workable institutions. What socialism gets right about modern economics. What it is commonly mistaken for. The Irish strand specifically, which is genuinely distinctive and which most international primers leave out.

A definition that survives most strands

At the broadest level, socialism is the political and economic tradition built around the proposition that the means of production should be owned collectively rather than privately, on the grounds that ownership of productive assets is what determines power in modern societies, and that formal political equality without economic ownership leaves the working population functionally subordinate even in a democracy.

The phrase "means of production" is doing real work. It refers to factories, land, mines, rail, ports, energy infrastructure, software platforms, financial systems, and increasingly the data and knowledge stocks that drive modern value. Socialism is the position that these things should be owned in common, in some form, rather than by a small class of private owners.

What "in common" means in practice is where the strands diverge. State ownership through a workers' party. Worker cooperatives at firm level. Municipal ownership at local level. Guild or syndicalist ownership through labour organisations. Mixed models in which the state, workers, and consumers all hold structural stakes. Each strand has its own answer.

The thing that links them is the underlying claim. Power follows ownership. Equal political rights without ownership are formal rather than substantive. To make the freedoms of liberalism real for the working population, the production system itself has to be changed.

This is the position. Anything that does not include some form of collective ownership of productive assets is not socialism. It may be useful, it may be necessary, it may be morally correct. It is not socialism. The welfare state, generous public spending, progressive taxation, regulated capitalism, public services delivered by state agencies, none of these are socialist in the strict sense unless they are accompanied by structural changes in who owns the productive economy.

This precision matters because the loose use of the word, in both directions, makes the actual argument harder to have.

Where the tradition came from

Socialism predates Marx by several decades. The early-19th-century tradition includes Robert Owen's industrial communities at New Lanark, Charles Fourier's phalansteries, Saint-Simon's technocratic socialism, the Chartists and the cooperative movement in Britain, and a wide range of religious-egalitarian experiments in the United States. These were practical attempts to organise economic life on non-capitalist lines, often small-scale, often religious in foundation, and frequently dismissed by Marx as utopian because they sought to demonstrate alternatives by example rather than to confront capitalism politically.

Marx and Engels's contribution, from the 1840s through the 1880s, was to reframe socialism as a structural and historical analysis rather than a moral one. The argument was that capitalism is not just unjust but unstable, that it generates its own gravediggers in the working class it concentrates and exploits, and that the transition to socialism is inscribed in the historical development of the productive forces themselves. The Communist Manifesto (1848) and Capital (1867 onwards) are the canonical texts.

This was a different kind of socialism. It was confident, theoretical, internationalist, and explicitly opposed to the religious and utopian strands. It also produced, over the following 150 years, both the modern social-democratic parties of Western Europe and the state-socialist regimes of the 20th century. The same body of theory generated both the Swedish welfare state and the Soviet gulag system, which is part of why the tradition is so contested internally.

The main internal traditions

The strands worth distinguishing.

Utopian socialism, the pre-Marxian tradition, survives mostly in the cooperative movement and in the long history of intentional communities. It is small in influence today but represented an early articulation of the position that economic life can be organised on non-capitalist lines.

Marxism, in the broadest sense, is the strand that treats socialism as an outcome of historical and structural analysis rather than as a moral preference. Modern Marxists are not necessarily revolutionaries. The analytical machinery has continued developing across the 20th and 21st centuries, with figures like Antonio Gramsci, Rosa Luxemburg, the Frankfurt School, David Harvey, and many others contributing without committing to any particular political programme.

Marxism-Leninism is the specific 20th-century state-socialist variant that emerged from Lenin's revolution in 1917 and structured the Soviet Union, the People's Republic of China, the Eastern Bloc, Vietnam, Cuba, and other states. The defining commitments were a vanguard party representing the working class, central planning of the economy, state ownership of large enterprise, and the dictatorship of the proletariat as a transitional political form. The historical record is mixed and largely negative. Some genuine industrialisation, social provision, and educational expansion. Also famines, gulags, mass repression, and a slow institutional decay that ended in collapse for most regimes that adopted the model. The defenders argue these failures were specific historical contingencies. The critics argue they were structural to the model. The argument continues.

Trotskyism is the anti-Stalinist Marxist current, descended from Leon Trotsky's opposition to the Soviet bureaucracy in the 1920s. The defining commitment is permanent revolution and resistance to the consolidation of socialism in one country. Most modern Trotskyist organisations are small, ideologically rigorous, and active in trade-union and tenants-rights organising. PBP/Solidarity in Ireland is in this tradition.

Maoism is the Chinese variant that emerged around the agrarian revolution and was extended through the Cultural Revolution in the 1960s. It treats the peasantry as a revolutionary class on a similar footing to the industrial working class and is sceptical of the urban-bureaucratic tendency in conventional Marxist-Leninist organisation. Influential beyond China in various 20th-century anti-colonial movements. Mostly historical now.

Democratic socialism is the strand that retains socialism's commitment to collective ownership but pursues it through parliamentary democracy and the labour movement rather than through revolution. The early 20th-century European socialist parties were largely in this tradition before they split. The modern continuation is most visible in the British Labour left (Bennite, Corbynite), the Sanders movement in the United States, and parts of the German Linke.

Libertarian and anarchist socialism rejects state-mediated socialism in favour of decentralised, federated, worker-and-community-controlled ownership. Pierre-Joseph Proudhon, Mikhail Bakunin, Peter Kropotkin in the 19th century. Murray Bookchin and Noam Chomsky in the 20th. The Spanish Civil War's Catalonian collectives are the largest historical example of this model in operation. It tends to be more popular among activists than among political parties, partly because it resists the parliamentary and electoral routes that parties exist to pursue.

Market socialism is a modern attempt to combine collective ownership with market exchange. Worker cooperatives competing in product markets, financed through socialised banking, with profits accruing to workers rather than to outside shareholders. The Mondragón cooperative federation in the Basque Country is the largest functioning example. The tradition is associated with thinkers like John Roemer and David Schweickart.

Christian socialism has been a real if minor tradition since the mid-19th century. R.H. Tawney's The Acquisitive Society and Equality are canonical texts. The position is that the moral commitments of Christianity (particularly the Catholic-and-Anglican social-ethics tradition) require an economic system that does not concentrate wealth and power. This strand has historical importance in British Labour and in some Latin American liberation theology, and it overlaps with Catholic social teaching while reaching different conclusions on the role of private property.

The 21st-century resurgence, often called millennial or zoomer socialism, is the post-2008 movement that produced the Sanders, Corbyn, and Mélenchon campaigns. The defining issues are housing, healthcare, climate, student debt, and labour rights. The intellectual frame is younger and looser than the 20th-century traditions, drawing eclectically from Marx, Polanyi, modern monetary theory, ecological economics, and various figures discussed elsewhere on this site. It is the most vital strand in the Anglophone socialist tradition today and the one most likely to shape the next generation of left politics.

What socialism gets right

Worth being explicit about, because this is the section the mainstream economic discourse rarely concedes.

Socialism is correct that ownership of productive assets is the single most important determinant of long-run power in modern societies, and that political equality without ownership equality leaves the working population functionally subordinate. The Piketty data on the long arc of wealth concentration since the 1970s is, in effect, an empirical vindication of the structural Marxist claim that capital accumulates without ceiling unless something forces it to redistribute. The argument that this happens in the absence of political contest is not ideology, it is observed reality.

Socialism is also correct that markets fail to price a number of important things. Externalities, future generations, ecological systems, the value of community and rootedness, the cost of social fragmentation. A purely market-allocated economy systematically underprices these and overproduces the things that markets do price. The state-correction approach of social-liberalism mitigates this. The structural-redesign approach of socialism attempts to remove the underlying problem.

Socialism is correct, finally, that there is something deeply odd about a political system that grants formal equality of vote and formal equality of speech while accepting structural inequality of economic power that determines what gets said, who gets heard, what gets built, and whose interests get represented in practice. The disjunction is real. Liberalism has answers to it. Social-democracy has answers to it. Socialism has the most direct answer, which is to address the asymmetry at its root.

What socialism is commonly mistaken for

Three persistent confusions.

First, socialism is often used as a synonym for state spending. This is wrong. Most modern states spend a large fraction of GDP on health, education, defence, infrastructure, and welfare without being socialist in any rigorous sense. Public spending is a feature of any modern government. Socialism is a structural change in who owns the productive economy. The two are not the same and conflating them is a category error that helps neither side of the argument.

Second, socialism is often confused with the welfare state. The welfare state is a social-liberal or social-democratic settlement in which the state provides certain services and transfers within an otherwise capitalist economy. Socialists frequently support welfare-state policies but the welfare state is not socialism. A society can have a generous welfare state and still be capitalist, and socialists know this. The conflation usually works to the rhetorical advantage of opponents of the welfare state, who can attack expansions as "socialism" without having to engage with the actual structural argument.

Third, socialism is often identified entirely with the Soviet model and its descendants. This is the most consequential confusion. The Soviet model is one variant of one strand of one part of a much larger tradition. The collapse of the Soviet Union and the failures of the Eastern Bloc do not refute socialism in general any more than the failures of liberal democracies in the 20th century would refute liberalism. They refute that specific variant. The argument continues with the other strands.

Where you find socialism in Irish politics

Ireland has a small but historically real socialist tradition that runs from the late 19th century to the present.

James Connolly (1868-1916) is the foundational Irish socialist and one of the more theoretically interesting figures in the international Marxist tradition. Born in Edinburgh to Irish parents, active in Scotland, Ireland, and the United States across his career, Connolly developed a synthesis of Marxism and Irish republicanism that few other socialist traditions managed. Labour in Irish History (1910) reads Irish history through the lens of class relations and is still read today. Connolly was executed for his role in the 1916 Rising. His relationship to subsequent Irish nationalism is contested, partly because the political tradition he founded was largely sidelined in the formation of the Free State, partly because his name has been claimed by both the parliamentary left and by Republican movements that he might or might not have endorsed.

The post-independence Irish socialist movement has been small and divided. The Labour Party absorbed much of the parliamentary-socialist current early on, then drifted away from socialism towards social democracy and eventually centrism. The Workers' Party / Democratic Left tradition was the more rigorous Marxist current and merged with Labour in 1999, contributing leadership but not theory. Sinn Féin's modern parliamentary form positions itself as broadly social-democratic in economic policy without using socialist language explicitly, partly out of strategic caution and partly because socialism is genuinely not the centre of gravity of the modern party.

People Before Profit and Solidarity are the openly socialist Dáil presence today. PBP draws on the Trotskyist tradition through the Socialist Workers Party. Solidarity has its own parallel lineage. Both are small, ideologically clear, active in housing campaigns, anti-water-charges organising, and trade-union politics.

The wider Irish left includes a number of small organisations, journals, and academic currents. The Labour Party's left, where it survives, is in the same Tawney-Bennite Christian-socialist-and-democratic-socialist tradition as the British Labour left. The TASC institute and the more critical of the Irish economists (Conor McCabe in particular, whose Sins of the Father is essential reading on Irish capitalism) are the closest thing to a credentialed Irish socialist intellectual scene.

The Catholic Church's anti-socialist position shaped 20th-century Ireland more than any other single factor in suppressing the development of an Irish socialist movement. The condemnation of communism in Quanta Cura, Rerum Novarum, and most loudly in Divini Redemptoris (Pius XI, 1937) was operationalised in Ireland through a sustained ecclesiastical campaign that effectively ruled socialism out of polite political discussion for two generations. The 1932 Catholic Truth Society pamphlet Was Connolly a Socialist?, attempting to argue that Connolly was actually a good Catholic who happened to use socialist language, is one of the more revealing artefacts of this period. The slow weakening of clerical political power since the 1990s has reopened space for socialist argument that had been closed for a long time.

Why this matters for the citizen

A citizen who is told that "we cannot afford" a particular public good, or that "the markets will not allow" a particular intervention, is being given an answer that depends on a specific structural arrangement of who owns what and who gets to decide. Socialism is the position that this arrangement is not natural, is not necessary, and is not beyond political contest. Whether one accepts the conclusion or not, the framing is useful. It makes visible a layer of the argument that mainstream economic discourse keeps off the table.

The current Irish housing argument is a good test case. The structural-supply-and-finance question of who owns Irish housing, how it is financed, who profits from rent, and who decides what gets built, is exactly the question socialism puts at the centre. Most current Irish political argument occupies the band above that question, taking the ownership structure as given and arguing about how much the state should help individual buyers and renters cope with it. The socialist frame asks why the structure is taken as given, and what would change if it were not.

A citizen who has only encountered socialism as the cartoon-Soviet version may find that the actual tradition contains a great deal of intellectual and historical material relevant to current Irish problems. The conclusion is not the only thing the tradition offers. The diagnostic apparatus, applied seriously to Irish capitalism, is itself worth the entry price.

Further reading

If you have an evening: Karl Marx, The Communist Manifesto (1848). Short, dense, much-quoted, surprisingly readable. Read it for the analytical sweep rather than for the political programme.

If you have a week: G.D.H. Cole, A History of Socialist Thought (5 volumes, abridged into single-volume editions). The standard scholarly treatment, fair to all the strands, written by a major figure in 20th-century British socialism.

For the Irish-specific story: James Connolly, Labour in Irish History (1910). Indispensable. Then Conor McCabe, Sins of the Father: Tracing the Decisions That Shaped the Irish Economy (2013), which is the best single book on the structural shape of modern Irish capitalism.

For the modern resurgence: Bhaskar Sunkara, The Socialist Manifesto (2019), which is the best short introduction to the post-2008 millennial-socialist current.

For the most rigorous current statement: Wolfgang Streeck, How Will Capitalism End? (2016), and the writings of Robert Brenner. These are demanding but represent the most serious recent academic attempts to extend the structural argument into 21st-century conditions.

The thing socialism asks, which the mainstream Irish economic discourse mostly does not, is who owns what and why. That is most of the work. The rest is taking the question seriously and asking what changes if the answer changes.

Related in the Political Literacy series

  • What Is Communism? — the strand of the broader Marxist tradition that defined the 20th century
  • What Is Social Democracy? — the parliamentary-reform branch socialism gave rise to and most often gets confused with
  • What Is Anarchism? — the libertarian-socialist alternative that warned against the state-mediated route
  • Gary Stevenson — the Citi rates trader whose work vindicates the structural extraction analysis
  • Grace Blakeley — the contemporary articulator of the structural critique
  • Yanis Varoufakis — the European political-economic context for current left analysis

Plus the framing piece, What Do Ireland's Parties Actually Stand For?, and the full Political Literacy archive.