You may have heard that some emails have surfaced from 2010 in which then Governor Daniels expressed his desire to make sure Howard Zinn was not part of Indiana University's training for secondary school teachers. Certainly we are all allowed to think of various positions as excrement, and special care should be given to what is taught in public schools.
I've only read a couple chapters of Zinn's book, so I can't speak to its excremental qualities. But the situation is a good reminder about what a quality education and, indeed, what the pursuit of truth is really about. Knowledge of facts is clearly an important element of education, but arguably the most significant element is learning how to think critically.
A quality education will present multiple perspectives and develop a student's ability to arbitrate between them. Quality colleges are not institutions of indoctrination, as if the truth needs us to hide the alternatives. Quality institutions of higher learning try their best to look at each interpretation of the evidence as objectively as possible, both for strong points and weak points.
So if a liberal professor were to disallow all perspectives but that of Zinn, that would be a bad education. I imagine there is some of that going around here and there. Similarly, if Daniels in his new role were to try to keep Purdue professors from presenting Zinn, it would immediately disqualify him from his job. I don't imagine he will try that.
It is a reminder, though, that those who cry "truth" the loudest are often those least interested in it. God is not worried about the new atheists, because he knows he exists. Go ahead, present your case to the contrary.
If we are really interested in the truth, we are willing to listen as objectively as possible to varying and contrasting perspectives. We are even willing to change our mind given a sufficient basis. God would change his mind about his own existence if you could convince him :-)
Anger and militancy can actually be a sign of insecurity about what one believes, a kind of compensation for lack of substance. Not always, but often.
Feel free to disagree...