I was looking at an imdb message board for Lions for Lambs and as expected I've seen people responding with a mix of people saying "this movie's crap...Robert Redford should just shut up" and then I see some people who are posting things like "Clearing Up Misconceptions/Wars on Iraq" where they might say things that i don't agree with, but at least they're laying out clear points and people are arguing it.
I think people in the former category who are thinking that Redford has no right to speak his mind and is guilty of spreading propaganda are not being very American. Propaganda is the dissemination of material presented as fact, when in fact Redford is well-aware that what he's providing is his own opinion. That's what artists do and society is better for allowing artists to do it. Furthermore, I think Redford is a well-educated citizen who has shown he's far smarter than the average American and he's aloud to say whatever he wants. You can not listen to it. You can listen to it, disagree with it, and voice why you disagree with it, but don't say that he has no right saying it.