Postmodern philosophy is the critical perspective that has grown from social science and the humanities over the last century and it has taken a firm hold of universities and social movements during the last few decades. Postmodernism involves a critical stance towards knowledge and science, and holds that power structures, unconscious drives, cognitive biases and arbitrary social constructions enthrall human minds. We are not nearly as rational as we think. Hence, the story of science and progress is not necessarily true: viewed from the perspective of the oppressed and weak, the progress of civilization often amounts to little more than exploitation, smoke screens, excuses and a more systematized oppression. The postmodern mind grows from late modern societies in which mass media and cultural distinctions often cause more suffering in people’s lives than do direct economic inequalities.
From Metamoderna.org