Professor Rebuts Charges of Liberal Bias Aired in Secretly Taped Class Video - Faculty - The Chronicle of Higher Education

"I wasn't trying to push anything here," Mr. Schaefer told The Chronicle. "Almost the whole class was about the science of global warming. I put forth no opinions on how humanity should respond to global warming." He said his most provocative statements were meant to reflect what others might say and to challenge students to defend their positions.
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Bryan Bernys, national field director for the Leadership Institute, sent out a news release linking to the edited video.

"I don't see how he can say he wasn't trying to bring politics into the lecture when he asks students to sit based on their political beliefs," he said Wednesday. "When conservative students get up to speak, he basically shuts them down."