BATON ROUGE, La. (AP) -- A Louisiana professor says he is being wrongly targeted by conservative activists who released video excerpts of a lecture on climate change.
CampusReform.org, a student group launched by the conservative Leadership Institute in Arlington, Va., has circulated video online of the professor telling students who don't believe in taking steps to end global warming that "blood will be your hands."
The video shows less than two minutes of excerpts from the lecture at Louisiana State University.
Astronomy professor Bradley Schaefer said Wednesday the lecture was nearly an hour long.
Schaefer said the clips misrepresent his point. He said his comments were aimed at provoking discussion about climate change policy and that he gave equal criticism to students with other points of view.
"What I was doing was very intentional. I was posing all sides of how to handle global warming, and I was challenging all sides of it, too," Schaefer told The Associated Press.
The dean of LSU's College of Science, Kevin Carman, said no student has complained about the lecture and no action will be taken against Schaefer, who Carman called a "spirited professor" with consistently positive student reviews.
Bryan Bernys, national director of CampusReform.org, said Schaefer's comments were far more pointed to students who chose the conservative point of view.
"He's clearly introducing his own opinion to the class, and it doesn't seem to be a very open position for conservative thinkers," Bernys said.
Schaefer said the video came from an organization "trying to use YouTube to make a university faculty teach what their political position is."
Bernys said one of his organization's "field representatives" attended the class with a student to record the lecture. Schaefer said the filmer misrepresented why he was there, which Bernys denied. Schaefer said he never saw a camera, though Bernys said it was placed on top of a backpack in plain view.
WATCH: Campus Reform's edited video: