Marxist ideology is one of the most potent weapons the working and oppressed classes have, a weapon that our class can and has used to not only win reforms but to build revolutionary societies where the people, and not profits, are in control. As the PSL identified at our 3rd Party Congress in 2016, one of our primary tasks is to mend the “break in ideological continuity” that emerged after the overthrow of the Soviet Union by reestablishing “the theory of revolutionary Marxism and the entire vision of workers’ power” as a dominant guiding pole in people’s struggles [1]. To correct for the ideological break, it’s helpful to have a concrete understanding of ideology and the different forms it takes. Although the word ideology is used frequently, it’s commonly used in a pejorative sense to refer to something that’s not factual, that’s unscientific, or that’s devoid of substance. It’s also used by those hostile to socialism to present a distorted view of Marxism. What exactly is ideology? What is the difference between bourgeois and Marxist ideology? What significance does this have for organizing today? To address these questions and help repair the break in the ideological continuity of revolutionary socialism in U.S. social movements, this article outlines Marx’s understanding of ideology. It traces his historical-materialist approach to investigating the relationship between ideas, material reality, and modes of production through several of his works. This allows us to take in the theory’s nuances about life and consciousness, as well as to draw out examples that are still relevant and applicable today. In particular, we focus on the theory of commodity fetishism and the function of the wage in producing the bourgeois ideological conception of the atomized individual. Proposing a move from “true/false” to “correct/incorrect,” the end of the article returns to the importance of popularizing and promoting Marxist ideology to understand and transform the world today, as revolutionaries have done throughout the socialist struggle to break the chains of exploitation and oppression. Read the full article: www.liberationschool.org/what-is-ideology