I know that my MO is to be vicious and rude to right-leaning posters, but that's not because of their political alignment. Its because of their detachment from reality and the inability to reach a common understanding of base level reality, basic definitions of words, and a refusal to engage in substantive conversation. Any poster, no matter how far right, that is actually willing to engage in discourse and bring in context, facts, references and actually engage in a real conversation on the topic at hand, I am willing to put the insults down and enjoin in good-faith conversation.
No, its a lens through which you look at everything - history, philosophy, science, the world, government, social relationships. Just as modernism is a lens through which you can view virtually anything. They're overarching umbrella terms.
No, not really. Again - one of the main takeaways from post modern thought is that there are no grand-narratives. Meaning, people that adhere to post-modern thought, don't really believe that history is the story of the oppressed vs the oppressor. Marxists arrive at their conclusions through modernism. That is, they believe, they assert (and are correct) that history is the story of the weak vs the powerful, the elites vs the peasants (oppressed vs oppressor, which is honestly a really dumbed down reductionist way of stating the Marxist position)
and they arrive at this conclusion through a complex *material* analysis, of objective reality and history, and they back up their premises and conclusions with scholarship and empirical science. Objectively trying to understand history, economics and social organization using empirical scholarship is modernism down to its very core. Post-modernists, categorically, by their very definition, do not believe that there is an "objective" history, or reality that can be studied and understood, and that it is only a matter of perspective. They would say that Marx trying to wage class warfare and unite workers against the bourgeois (elites/capitalists) is only his perspective and is not the objective reality, because there is no objective reality.
“Part of the postmodern answer is that the prevailing discourses in any society reflect the interests and values, broadly speaking, of dominant or elite groups. Postmodernists disagree about the nature of this connection; whereas some apparently
endorse the dictum of the German philosopher and economist
Karl Marx that “the ruling ideas of each age have ever been the ideas of its ruling class,” others are more
circumspect. Inspired by the historical research of the French philosopher
Michel Foucault, some postmodernists defend the comparatively
nuanced view that what counts as knowledge in a given era is always influenced, in complex and subtle ways, by considerations of power.”
I do think think leads to oppressor vs oppressed ideologies if they weren’t already present in postmodern thought.