" Actually, it is true."
No, it isn't. Show us where ALL economists followed Marx, and forbade any dissent. Show where all psychologists followed Freud, and allowed no dissent.
"Your asserting to the contrary without any supporting facts notwithstanding."
You're the one making sweeping generalizations without anything to back them up.
" Once again, outside of evolutionary science, asserting something to be true does not make it so."
Just because you say that every economist followed Marx, or that every psychologist followed Freud, does not make it so. Provide your evidence.
Providing you with an intellectual history of the 19th and 20th centuries is, I am afraid, beyond the scope of this discussion, for what I hope are obvious reasons. I must admit I rather assumed that anyone trying to pass themselves off as a conservative on this forum was at least vaguely familiar with this subject area.
Feel free to do a little homework. I guess you could just google around but you'd be better off engaging the subjects with a little more formal mode of inquiry.
Study the history of Marxism & Freudianism & Darwinism from the point of view of their rise and acceptance amongst the intellectual and academic elites in the West. This might not be a terrible place to start: http://www.firstthings.com/ftissues/ft9603/opinion/thistime.html