Are facts really factual?

Many have argued and  believed (Postmodernists) that were no such things as “facts”, only modes of discourse that forever block us from making truth claims about reality, 

and the term “postmodern” became a pejorative term to deride these thinkers as adhering to epistemological and moral nihilism.

hence progressive and conservative political views are found flailing in diagnosing the problems of the political, especially when facing the devaluation of all values in consumer culture