Class Struggle: The Driving Force of History According to Marx

One sentence sums up Karl Marx’s entire reading of human society: the history of all hitherto existing society is the history of class struggles. For Marx, conflict between social classes is not an occasional disturbance in an otherwise stable world. It is the engine that drives history forward, pushing societies from one stage of development to the next. Understanding his theory of class war means understanding how he saw economics, power, and revolution as deeply connected. This post breaks down that theory step by step, from the roots of class division to Marx’s vision of a society without classes at all.

The foundation: class is rooted in production 🔗

To understand Marx’s theory of class war, you first need to understand how he defined class itself. For Marx, class is not about income, lifestyle, education, or social prestige. It is defined entirely by a person’s relationship to the means of production – the factories, land, tools, and raw materials used to produce goods. People who own and control these productive resources belong to one class. People who own nothing but their own capacity to work belong to another.

This idea sits at the heart of what Marx called historical materialism. Unlike thinkers who explained history through great ideas or great men, Marx argued that the way humans organise themselves to produce the necessities of life is the primary force shaping society. Everything else – law, politics, religion, culture – forms what he called the superstructure, which ultimately reflects the underlying economic base. As he famously put it, the hand-mill gives you society with the feudal lord, while the steam-mill gives you society with the industrial capitalist.

The stages of history 🔗

Marx saw human history as moving through distinct modes of production, each defined by a particular form of class antagonism. His writings identify several stages humanity has already passed through: primitive communism, slavery, feudalism, and capitalism. At each stage after the first, society split into two opposed groups – freeman and slave, lord and serf, and in the modern era, capitalist and worker.

The pattern repeats. The class that owns and controls production dominates the rest, perpetuating tension and conflict. But each system also generates internal contradictions that eventually break it apart, giving way to a new economic order and a new ruling class. Feudalism produced the merchants and manufacturers who became the capitalist class; capitalism, Marx argued, was producing the very class that would overthrow it.

The two great classes of capitalism 🔗

Marx believed that earlier societies had complicated arrangements of many overlapping ranks and orders. Capitalism, however, was simplifying things. He observed that society as a whole was splitting up into two great hostile camps. These are the two protagonists of the modern class war.

The bourgeoisie 🔗

The bourgeoisie is the capitalist class. Its members own the means of production – the factories, machinery, and capital needed to run a modern economy. They do not survive by working themselves but by employing others and profiting from that employment. Because they control the economic base, they also tend to control political power. Marx argued that political power is essentially the organised power of one class for oppressing another, and that the bourgeoisie uses the state as an instrument to protect its own interests.

The proletariat 🔗

The proletariat is the working class – the far larger group that owns no productive property. Its members have only one thing to sell: their capacity to work, what Marx called labour power. To survive, they must sell this labour power to the bourgeoisie in exchange for wages. This dependence is the source of their vulnerability. Marx and Engels described the proletariat as capitalism’s special and essential product – the one class that modern industry both creates and concentrates in ever larger numbers.

Marx also acknowledged groups that did not fit neatly into this binary. The petty bourgeoisie (small shopkeepers, artisans, and professionals) and the peasantry occupied an intermediate position, while the lumpenproletariat referred to the most marginal and declassed sections of society. He treated these as transitional and politically unreliable, ultimately subordinate to the central conflict between capitalist and worker.

Exploitation and the source of conflict 🔗

Why must these two classes be in conflict? For Marx, the answer lies in the concept of surplus value. This is where his economic analysis becomes the basis of his political theory.

When a worker is employed, they produce goods worth more than the wages they receive. A worker might create value equivalent to their day’s wage in just a few hours, but they continue working for the rest of the day. That extra, unpaid value – the gap between what workers produce and what they are paid – is appropriated by the capitalist as profit. According to Marx’s theory, the worker is exploited because they do not keep or control the value created by their own labour.

This is the crucial point: exploitation is not about cruel individual bosses or unfair contracts. It is a structural feature built into capitalism itself. Capitalists are driven by competition to extract as much surplus value as possible, while workers, having no alternative means of survival, have little real choice but to accept the arrangement. The relationship between the two classes is one of mutual dependence, but it is not equal. It is a relationship of exploiter and exploited. This built-in antagonism is what makes class conflict permanent under capitalism, not occasional.

From a class in itself to a class for itself 🔗

Exploitation alone does not produce revolution. Workers must first become aware of their shared situation. To capture this, Marx drew a famous distinction between a class in itself and a class for itself.

A class in itself is simply a group of people who share the same relationship to the means of production but who lack any collective awareness of their common interests. Millions of workers may face wage cuts, insecurity, and poor conditions, yet each may see these as personal misfortunes rather than as the shared experience of an entire class.

A class becomes a class for itself when its members develop class consciousness – a full awareness of their true position and of the nature of their exploitation. At this stage, workers recognise their shared interests, develop solidarity, and organise politically to pursue their collective goals. Marx rarely used the exact phrase “class consciousness,” but he clearly distinguished between a stratum that merely shares grievances and one that is actively organised in pursuit of its own interests.

How consciousness develops 🔗

Marx argued that capitalism itself creates the conditions for this awakening. Factories concentrate large numbers of workers in one place, making communication and shared identity easier. Modern transport and communication link local struggles into national ones. Crucially, he wrote that every class struggle is a political struggle. The organisation of workers into trade unions and then into a political party is, for Marx, the practical expression of this transformation. Even when competition between workers temporarily breaks this unity apart, he believed it would rise again, stronger and firmer each time.

Revolution and the overthrow of capitalism 🔗

Marx believed that the contradictions of capitalism would intensify over time. Wealth and ownership would concentrate in fewer and fewer hands, while the proletariat grew larger and more impoverished. Economic crises would become more frequent and severe. Eventually, the situation would become intolerable, and the working class – now conscious and organised – would rise in revolution.

In a striking image, Marx and Engels wrote that the bourgeoisie produces its own grave-diggers, and that the fall of the bourgeoisie and the victory of the proletariat were equally inevitable. The proletarian revolution, in their view, was different from all earlier ones. Previous revolutions had simply replaced one ruling minority with another. This one would be the movement of the vast majority in the interest of the majority – and, they believed, the final class struggle in human history.

The dictatorship of the proletariat 🔗

The revolution would not immediately produce a perfect society. Marx argued that capitalism would be followed by a transitional phase he called the dictatorship of the proletariat. During this period, the working class would hold political power and use the state as a tool to suppress the resistance of the former ruling class and dismantle the social relations that sustained the class system.

It is worth being careful with this term. Despite the word “dictatorship,” Marx conceived of this phase as a form of rule by the majority over a small former elite – not the dictatorship of a single party or person that the phrase later came to suggest. During this stage, the proletariat would seize control of the means of production, abolish private property in productive resources, and begin breaking down the structures of class division.

The classless and stateless society 🔗

The ultimate destination of the entire process is a society without classes. Once private ownership of the means of production is abolished and resources are held collectively, the very basis of class division disappears. With no class owning production and exploiting another, there are no longer two hostile camps – and therefore no class war.

Here Marx made one of his most distinctive claims. He saw the state primarily as an instrument of class domination, a tool one class uses to oppress another. If classes themselves cease to exist, the state loses its fundamental purpose. Marxism therefore predicts the eventual emergence of a stateless and classless society without private property, which Marx called communism. In this final stage, production would be organised according to human need rather than private profit, and, in the words of the Communist Manifesto, the free development of each would become the condition for the free development of all.

Why the theory still matters 🔗

Marx’s theory of class war has faced serious criticism. Some argue that history did not follow his predicted path – advanced capitalist societies did not collapse into proletarian revolution, and living standards for many workers rose rather than fell. Critics also point out that his focus on ownership of production oversimplifies modern stratification, where factors like education, profession, caste, and skill create divisions that his two-class model does not fully capture. Others note that where revolutions did occur in his name, the transitional “dictatorship” often hardened into permanent one-party rule rather than withering away as he had hoped.

Even so, the theory remains a powerful analytical lens. The idea that economic relationships shape politics, that those who control resources tend to control power, and that shared material conditions can produce collective action continues to influence how scholars study inequality and social movements around the world. Whether or not one accepts his conclusions, Marx forced political thought to take economics and conflict seriously as forces shaping the whole of human history.

What do you think? Does Marx’s idea that class conflict is the central driver of history still help explain the inequalities and movements you see around you today? And can a complex modern society really be reduced to just two opposing economic classes, or has the picture become too complicated for his model to hold?

References

1. https://www.britannica.com/topic/historical-materialism
2. https://socialsci.libretexts.org/Courses/Western_Washington_University/Introduction_to_Political_Theory_I/01:_Readings/1.14:_Karl_Marx_and_Friedrich_Engels__The_Communist_Manifesto_1847
3. https://chromeias.com/series-sociology-marx-class-struggle/
4. https://www.marxists.org/archive/marx/works/1848/communist-manifesto/ch01.htm
5. https://oyc.yale.edu/node/1787
6. https://en.wikipedia.org/wiki/Marx%27s_theory_of_class
7. https://en.wikipedia.org/wiki/Class_consciousness
8. https://britannica.com/topic/Marxism/Class-struggle
9. https://en.wikipedia.org/wiki/Dictatorship_of_the_proletariat
10. https://www.britannica.com/topic/Marxism