True. I always tell my students they are free to disagree with anything I say. I tell them I am not the be-all and end-all of intelligence and insight. Still, I see so many students becoming zombies because they simply want to pass the class. If they have to kiss the professor's butt to do that, they're more than happy to do so.
At the same time, I'll bet the students and the university would have reacted much more quickly and with much more "outrage" if the professor had asked them to write any one of the following things on that paper: Mohammed, Obama, Homosexual, Gay Marriage, Abortion, Black, Hispanic, Minority, Arab, Woman, Sustainability, Diversity, Multiculturalism, etc.