Terry Eagleton weighs in in support of Reader's theory that most of what's going on nowadays is unresolved tension from the late Cold War period:
[P]ostmodernism springs in large part from the rout of modern Marxism. In the work of Baudrillard, Lyotard and others, it began as an alternative creed for disenchanted leftists. Its obsession with discourse makes sense in an age short on political action. Instead of setting fire to campuses, American students now cleanse their speech of incorrectness. If Marxism had been shamefully coy about sexuality, postmodernism makes a fetish of it. The warm, desiring, palpable body is a living rebuke to all those bloodless abstractions about the Asiatic mode of production. Instead of grand narratives that lead to the gulag, we have a plurality of mini-narratives. Since doctrinal absolutes dismember bodies, relativism is the order of the day. If castrating homosexuals is part of your culture, it would be ethnocentric of me to object. Revolution is no longer on the agenda, but sporadic subversions may stand in for it. Class politics yields to identity politics. The system cannot be overthrown, but at least it can be deconstructed. And since there is no political hope in the heartlands of capitalism, where the proletariat has upped sticks without leaving a forwarding address, the postmodern gaze turns mesmerically to the Other, whatever passport (woman, gay, ethnic minority) it happens to be travelling on.