False consciousness is a term used - primarily by Marxist sociologists - to describe ways in which material, ideological, and institutional processes are said to mislead members of the proletariat and other class actors within capitalist societies, concealing the exploitation intrinsic to the social relations between classes.
Friedrich Engels (1820-1895) used the term "false consciousness" in an 1893 letter to Franz Mehring to address the scenario where a subordinate class willfully embodies the ideology of the ruling class. Engels dubs this consciousness "false" because the class is asserting itself towards goals that do not benefit it. "Consciousness", in this context, reflects a class's ability to politically identify and assert its will. The subordinate class is conscious: it plays a major role in society and can assert its will due to being sufficiently unified in ideas and action.
Marshall I. Pomer has argued that members of the proletariat disregard the true nature of class relations because of their belief in the probability or possibility of upward mobility. Such a belief or something like it is said to be required in economics with its presumption of rational agency; otherwise wage laborers would not be the conscious supporters of social relations antithetical to their own interests, violating that presumption.
The Italian Marxist theorist Antonio Gramsci developed the concept of cultural hegemony, the process within Capitalist societies by which the ruling classes create particular norms, values, and stigmas, amounting to a culture in which their continued dominance is considered beneficial.
During the late 1960s and 1970s, the philosophical and anthropological school of structuralism began to gain popularity among academics and public intellectuals, focusing on interpreting human culture in terms of underlying structures such as symbolic, linguistic, and ideological perspectives. French Communist Party member and public intellectual Louis Althusser popularized his structuralist influenced interpretation of false consciousness, The Ideological State Apparatus. Structuralism influenced Althusser's interpretation of false consciousness, which focuses on the institutions of the capitalist state--particularly those of public education--which enforce an ideological system favoring obedience, conformity and submissiveness.
Other prominent Marxist philosophers and intellectuals developed specific interpretations of the concept of false consciousness, such as Theodor Adorno and Herbert Marcuse of the Frankfurt School, Guy Debord and Raoul Vaneigem of the French situationist movement, the anti-colonialist writer Frantz Fanon, and contemporary philosopher Slavoj ?i?ek. Outside of the Marxist political ideology, the political theorist Noam Chomsky developed the propaganda model wherein information is selectively broadcast to serve the ends of a deeply centralized ownership of private media industries.
Ideology is a process accomplished by the so-called thinker consciously, it is true, but with a false consciousness. The real motive forces impelling him remain unknown to him; otherwise it simply would not be an ideological process.