These days, the weight of documentary film has been, to a great extent, undermined by the desire of its producers not to cause avoidable ripples in the calm surface they perceive surrounds them.
We do not learn from experience because it is inconvenient to do so; it undermines our need to repeat the same mistakes of those gone by time after time in our desire for survival; the right to blame regrettable, human accident for such mistakes rather than confess our inadequacy.
This wonderful, hard to watch, series has, at its core, the need for us to never again have to say 'never again' whilst turning away from humanity's shortcomings.
The contributions are honest. The visuals are rightly graphic to the extent that they damn broadcast news media from exposing us only to their airbrushed reality of our world.
I can't recommend it highly enough. It is revelatory about stuff we suspected was wrong with our world and damning regarding our humanity.