Let's try this: "liberal-leaning institutions are restricting speech mostly due to the (choose:political OR diverse OR learning-focused OR religious!) nature of the institution though. A private entity of any sort isn't required to give equal time to people it disagrees with in its space."

> and it's not "political" if the expulsion is due to differences in religious doctrine. I wager that many of the expulsions at those colleges are due to said liberal holding a position counter to religious doctrine

See, you've already conceded the only viable response to my above rewriting. Most all controversial differences in religious doctrine ARE political. Your distinction is one without difference. The political nature of these difference in doctrine is what makes them worth firing over in the first place!

Unless you want to point me to the Mathematics professor who got fired for critiquing the finer points of the Church's justification of its position on transubstantiation. (This century, please :-) )

If you want to critique Hillsdale AND Harvard et al, go right on ahead.