Real like Reality TV

"Triumph of the Will" is as much of a documentary as "Flavor of Love" is. They're both made up of "actual footage" of actual events, but they're both scripted, staged, and skillfully edited for a certain purpose. While "Flavor of Love" is trying to be outrageous, hilarious TV, "Triumph of the Will" strives to be pro-National Socialist propaganda.
With "Triumph of the Will" very specific images of Hitler and the people were chosen to portray a very positive image of his leadership and it's country. I would not be surprised to find out that every single instance in the film was staged ahead of time and everyone was instructed on how exactly to behave. That is how we end up with plump German women hailing Hitler like he's a rock star and close-ups of young, strapping Arian boys laughing and having fun.
Plus I wonder, where's the other side? Where are the dissenters? I have a hard time believing everyone went and welcomed Hitler with open arms. There may not have been protesters, but people may have chosen to stay home--well if this was reality.
If "Triumph of the Will" is a documentary, it is in the loosest sense of the word. It is first, and foremost, a propaganda film meant to ally all of it's viewers with Hitler.