I have not been part of an active counterculture movement, as it is not the approach that I have personally pursued to create a qualitatively beneficial and meaningful impact on society.
In trying to get votes for the Superconducting Super Collider, I was very much involved in lobbying members of Congress, testifying to them, bothering them, and I never heard any of them talk about postmodernism or social constructivism. You have to be very learned to be that wrong.