Social democracy is an ideology that advocates for reforming capitalism and creating a welfare state without changing the mode of production or creating a dictatorship of the proletariat. Social democrats are sometimes called "social fascists" because they usually side with the bourgeoisie over revolutionary socialists, such as in Germany in 1919. Examples of social democratic states are France, Finland, and Sweden. The most well-known social democrat in the United States is Bernie Sanders.

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Democratic Socialism refers to the theory of achieving socialism within the confines of bourgeois democracy, usually through electoral means. Democratic Socialists reject the Marxist–Leninist theory of achieving socialism by utilising the state to oppress the bourgeoise with the goal of achieving communism, as they perceive it to be "authoritarian" and "undemocratic."

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Eurocommunism was a revisionist Marxist tendency that was popularized by Santiago Carillo, the former general secretary of the Communist Party of Spain (PCE) from 1960 to 1982 in his landmark political work, Eurocommunism and the State. Its supporters claimed that it was a natural continuation of Marxist ideology after the death of fascist regimes in Greece, Italy, and Portugal and the "defeat of U.S. imperialism in Vietnam" and as a rejection of dogmatic currents in Marxist politics. In reality, Eurocommunism rejects the core Marxist tenant of class struggle due to its reformists beliefs, attacks socialist countries including the Soviet Union and China, as well as defends western imperialism, reducing it to a form of social democracy. It can be argued that the Eurocommunist movement is most similar to the democratic socialist movement that plagues the western socialist movement to this day.

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