Haven't seen the film Doug, but I'd like to. I love documentaries, but I'm always careful to try and remove as much of the filmaker's bias as I am able to. I'm not even sure if there is such a thing as a "true" documentary on anything where there's passion involved.For many years Leni Reifenstall has tried to dis-associate herself from the politics of "Triumph Of The Will", but as we all know, she'll never be able to 'cause she couldn't even hint at negatives. Simply, the third Reich payed the piper and hence "called the tune".
When I watch a documentary about (say) Cuba, from a negative point of view, I want to know who financed it. Same thing if it was one extolling Fidel. If either points of view have "official" backing I tend to not take it very seriously...although it might be entertaining, and generally informative.
Rick