To spin off Quadraphonics' last post, there is a certain irony to it.
In theory, a good professor (of any political alignment) will always suffer some natural bias. In fact, the harder a good professor tries to eliminate the natural bias, the more that bias will show. Because not only is the information the professor gives subject to the bias, but the information s/he receives, as well.
Which is why the seeming death of critical thinking in American education is worrisome.
Now, one of the problems with "conservative" scholarship is that it often proposes radical paradigm shifts. And while circumstances do occasionally call for such huge changes, it's rare, and those changes usually happen gradually, as the data comes in and the conclusions become inescapable.
But with "liberal" scholarship like Columbus revisionism, the change was simply to give attention to the primary sources. The rest--the condemnation of the Columbus cult--came from the fact that the primary sources paint a picture that offends common values. (He was a cold butcher, according to his own hand.)
"Conservative" scholarship, though, often seems to demand that we change the common values before looking at the information. Like I tried to point out about this whole Vietnam thing. There is on record at least one complaint that his "Vietnam was winnable" argument meant going absolutely overboard, and conducting ourselves in a manner we simply would not accept of anyone else. Blowing up dams, drowning the population, destroying the food supply, inviting epidemic. We, the United States, have agreed to not conduct ourselves that way, so accusing a "lack of political will" is a thoroughly political assertion.
What happens, then, is that in the end, conservatives pretend that it's solely about their politics, and in one of the great, ironic twists of American politics, weep and wail and demand affirmative action.
Question: Will conservatives open their demands for affirmative action so that universities should be required to hire a certain number of holocaust deniers? How about rape advocates? I mean, our psychology and women's studies departments severely lack any balance in that aspect. So where's the "she was asking for it" professor? I mean, don't students deserve to hear diverse points of view? What about the law school professor teaching the family law class that asserts that the U.S. Constitution contains no specific laws about marriage, therefore it's unconstitutional to ban polygamy or incestuous marriages? Don't our students deserve, for all their money and hard work, to hear diverse viewpoints?