Read. Learn.
What I learned is that the damn lies (read statistics) that the learned Mr. Horowitz sited were overwhelmingly from the humanities departments. I am quite certain had the data been culled from the engineering, math, physics and hard science side of the house that it would have evened out the gap. Furthermore, if an administration was actively abusing its conservative students (also known as customers) I suspect that the institute would be facing litigation up to its collective eyeballs.
My wish is for all this anecdotal evidence to go away and for some organization to provide a comprehensive survey of the political climate of our nation's campuses. I suspect no one will because the results might turn out to be very surprising.