Modern propaganda wanted to make you believe something that may or may not have been true.
Soviet propaganda, for instance, wanted you to believe in a communist utopia.
Postmodern propaganda wants you to believe nothing. It wants you to believe only that there is nothing to believe.
Postmodern propaganda isn’t trying to recruit you to a political cause. It wants to depoliticise you. To help you abandon any belief in political solutions.
If you enjoyed The Three Body Problem by Liu Cixin as science fiction, try reading it again as a work of postmodern propaganda. You’ll find the experience illuminating.
And if you’re exasperated by the idea that a popular SF novel might also be propaganda, the full case is laid out in this episode of the Science Fiction podcast.
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