Politics in the classroom

Stanley Fish is a noted literary critic and, apparently, a cultural one too. I'd be interested in your thoughts/responses to his Times op/ed. I don't do buttons or bumper stickers as a general rule, but if you ask, I don't think I'd keep my personal politics much of a secret, nor ask you to do the same. I disagree with Fish...I think he misses the difference between productive, respectful dialogue among people who disagree, and brainwashing/political indoctrination. Or he thinks teachers and professors are incapable of the former. What do you think?