Do all professors think alike?

While commenting about Louis Menand's A Marketplace of Ideas , Thomas Benton (aka William Pannapacker) observes:

More provocatively, Menand asks "whether holding liberal views has become a tacit requirement for entry and promotion in the academic profession" in a period in which political commitment has replaced the ideal of disinterested objectivity. He asks whether there is a "code" in academe that extends to "matters of intellectual, pedagogical, and collegial decorum, [that] the entrants are required to demonstrate for admission to the profession ... including personal manner and appearance."

There is only one response I can possibly think of: