I absolutely agree with this statement. I thought that "The Life of David Gale" was a brilliant movie despite its obvious anti-death penalty view.
I am disappointed that Ebert slammed the film for the reasons that he did. "Gale" did poorly at the box office due in part, I'm sure, to the reviews it received.
I'll probably see "Buffalo Soldiers" when it comes to DVD. I rarely see movies in the theater anymore. If it is good, I will appreciate it despite the politics. Hell, people can say that "Stripes" was defamatory towards the military and that film is a comedic classic!
Anyone can make a movie about people who are disgruntled workers without saying that the whole profession is corrupt (or that the corruption is justified).