Classical Marxism in the context of Praxis (process)

Western Marxism is a current of Marxist theory that arose from Western and Central Europe in the aftermath of the 1917 October Revolution in Russia and the ascent of Leninism. The term denotes a loose collection of theorists who advanced an interpretation of Marxism distinct from classical and Orthodox Marxism and the Marxism–Leninism of the Soviet Union.

Less concerned with economic analysis than earlier schools of Marxist thought, Western Marxism placed greater emphasis on the study of the cultural trends of capitalist society, deploying the more philosophical and subjective aspects of Marxism, and incorporating non-Marxist approaches to investigating culture and historical development. Key themes included the influence of Georg Wilhelm Friedrich Hegel on Karl Marx's thought, and the recovery of the "Young Marx," emphasizing his early, humanistic writings.

Orthodox Marxism is the body of Marxist thought which emerged after the deaths of Karl Marx and Friedrich Engels in the late 19th century, expressed in its primary form by Karl Kautsky. Kautsky's views of Marxism dominated the European Marxist movement for two decades, and orthodox Marxism was the official philosophy of the majority of the socialist movement as represented in the Second International until the First World War in 1914, whose outbreak caused Kautsky's influence to wane and brought to prominence the orthodoxy of Vladimir Lenin. Orthodox Marxism aimed to simplify, codify and systematize Marxist method and theory by clarifying perceived ambiguities and contradictions in classical Marxism.

Orthodox Marxism maintained that Marx's historical materialism was a science which revealed the laws of history and proved that the collapse of capitalism and its replacement by socialism were inevitable. The implications of this deterministic view were that history could not be "hurried" and that politically workers and workers' parties must wait for the material economic conditions to be met before the revolutionary transformation of society could take place. For example, this idea saw the Social Democratic Party of Germany (SPD) adopt a gradualist approach, taking advantage of bourgeois parliamentary democracy to improve the lives of workers until capitalism was brought down by its objective internal contradictions.

Post-capitalism is in part a hypothetical state in which the economic systems of the world can no longer be described as forms of capitalism. Various individuals and political ideologies have speculated on what would define such a world. According to classical Marxist and social evolutionary theories, post-capitalist societies may come about as a result of spontaneous evolution as capitalism becomes obsolete. Others propose models to intentionally replace capitalism, most notably socialism, communism, anarchism, nationalism and degrowth.

Marxism is a method of socioeconomic analysis that originates in the works of 19th century German philosophers Karl Marx and Friedrich Engels. Marxism analyzes and critiques the development of class society and especially of capitalism as well as the role of class struggles in systemic, economic, social and political change. It frames capitalism through a paradigm of exploitation and analyzes class relations and social conflict using a materialist interpretation of historical development (now known as "historical materialism") – materialist in the sense that the politics and ideas of an epoch are determined by the way in which material production is carried on.

From the late 19th century onward, Marxism has developed from Marx's original revolutionary critique of classical political economy and materialist conception of history into a comprehensive, complete world-view. There are now many different branches and schools of thought, resulting in a discord of the single definitive Marxist theory. Different Marxian schools place a greater emphasis on certain aspects of classical Marxism while rejecting or modifying other aspects. Some schools of thought have sought to combine Marxian concepts and non-Marxian concepts which has then led to contradictory conclusions.

Marxism–Leninism (Russian: марксизм-ленинизм, romanized: marksizm-leninizm) is a communist ideology that became the largest faction of the communist movement in the world in the years following the October Revolution. It was the predominant ideology of most communist governments throughout the 20th century. It was developed in the Soviet Union by Joseph Stalin and drew on elements of Bolshevism, Leninism, and Marxism. It was the state ideology of the Soviet Union, Soviet satellite states in the Eastern Bloc, and various countries in the Non-Aligned Movement and Third World during the Cold War, as well as the Communist International after Bolshevization. Today, Marxism–Leninism is the official ideology of the ruling parties of China, Cuba, Laos, and Vietnam, as well as many other communist parties. The state ideology of North Korea is derived from Marxism–Leninism, although its evolution is disputed.

Marxism–Leninism was developed from Bolshevism by Joseph Stalin in the 1920s based on his understanding and synthesis of classical Marxism and Leninism. Marxism–Leninism holds that a two-stage communist revolution is needed to replace capitalism. A vanguard party, organized through democratic centralism, would seize power on behalf of the proletariat and establish a one-party communist state. The state would control the means of production, suppress opposition, counter-revolution, and the bourgeoisie, and promote Soviet collectivism, to pave the way for an eventual communist society that would be classless and stateless.

The World Socialist Movement (WSM) is an international organisation of socialist parties created in 1904 with the founding of the Socialist Party of Great Britain (SPGB).

The member parties share a common classical Marxist worldview and an adherence to socialism defined as a distinct economic system from capitalism. As a result, the parties of the WSM are held in sharp contrast to social democratic political parties and Marxist–Leninist movements. In contrast to social democratic parties, the WSM parties do not pursue social and economic reforms to capitalism, nor do they seek political office in electoral politics and they do not focus on so-called progressive causes, believing such actions to be irrelevant to their fundamental goal of socialism. In contrast to Marxist–Leninist communist parties, they do not subscribe to the theories of imperialism, vanguardism and democratic centralism, believing such practices to be antithetical to the realisation of socialism.