In truth, ideology has very little to do with 'consciousness', even supposing this term to have an unambiguous meaning. It is profoundly unconscious, even when it presents itself in a reflected form.
Louis AlthusserIdeology represents the imaginary relationship of individuals to their real conditions of existence.
Louis AlthusserIdeology... is indispensable in any society if men are to be formed, transformed and equipped to respond to the demands of their conditions of existence.
Louis AlthusserWhatseems to take place outside ideology (to be precise, in the street), in reality takes place in ideology. What really takes place in ideology seems therefore to take place outside it. That is why those who are in ideology believe themselves by definition outside ideology: one of the effects of ideology is the practical denegation of the ideological character of ideology by ideology: ideology never says, 'I am ideological.'
Louis Althusser