Likewise---this didn't happen, but it's a good analogy---say Charles Murray had been an untenured academic in a PC state when he wrote "the Bell Curve." He would have been fired for daring to speak heresies.
Sooner or later, tenure does protect legitimate research from social impingement. It allows science to "go where the evidence leads."
While I believe in markets and personally think I would have no trouble competing in a truly open market, I do see the value of tenure in times of social upheaval.
Thank you very much for the explanation.