However, I'm not going to sit through another manipulative propaganda film from the anti-meat lobby.

Yes, the billion dollar tofu-industry has created this propaganda film.

I'm happy being an omnivore, thankyouverymuch, and I have no problem with animals being killed for food or clothing.

Is your argument that you don't want to watch a movie because you don't agree with it before hand? I recommend you to reconsider the function of documentary films.