The achiles heel of the documentaries as a form of propaganda & psyops (aka "narratives presented as reality") is that they have a profound dependence on aural cues for manipulating the audiance. It is difficult to be subtle regarding that intent when sound is involved.
So pay attention to the sound track and adjust your "suspension of disbelief" accordingly.
Fielder has said that setting the tone with music in documentaries is among the most important things he does. I also find that unsettling.
My favorute example of a "documentary" whose sound stage reveals it as a psyop very obviously is the 2007 "Zeitgeist: The Movie".
I am lucky that I am very sensitive to emotionally manipulative music in contexts where I don't want to be emotionally manipulated by music.
In general, it would help anyone to know more about the craft of how filmmakers get people to feel emotions.