The tradition that emerged from the Frankfurt School in the 1930s, extending Marxist analysis beyond economics into culture, mass media, ideology and the structures of modern subjectivity. Its founding methodological claim, set out in Horkheimer's "Traditional and Critical Theory" (1937), is that social theory should not merely describe society but should orient itself toward emancipation from it — that a theory which takes existing arrangements as its given has already taken a side.
The Institute for Social Research was founded in Frankfurt in 1923 and driven into American exile by the Nazis a decade later, and the tradition's early character was set by having to explain a catastrophe. Why had the working class turned to fascism rather than revolution? Horkheimer and Adorno's Dialectic of Enlightenment (1947) gave the bleakest answer: that Enlightenment reason contained from the start a drive to domination which turned against human beings themselves. Marcuse's One-Dimensional Man (1964) argued that advanced industrial society absorbs dissent by satisfying manufactured needs, and became an unlikely text of the New Left.
Habermas broke with the pessimism. His theory of communicative action located a rationality oriented toward understanding rather than control, and rebuilt the possibility of legitimate democratic deliberation the first generation had all but abandoned. Honneth then shifted the frame again toward recognition, and the third generation's work sits closer to liberal political philosophy than its founders would have accepted.
The label is now used in public argument for a range of positions the Frankfurt School did not hold and in some cases explicitly opposed, which has made the term more contested outside the academy than within it. The serious scholarly objections are older: that the theory insulates itself from disconfirmation by treating disagreement as false consciousness, and that a tradition committed to emancipation produced remarkably little account of what an emancipated society would concretely look like.
