I have no idea why it got such low reviews.
Taking stories to break down how the dry world of finance and the complexities of how the "Panama Papers" broke out. Linking seemingly unrelated to the concentration and tax avoidance of the rich and powerful into a movie that thrusts the viewer into a state of numb shock. This should make you furious.
Then the reality that the rich don't have it better than you. Just another day at the office for some. Then head back to work and try to keep your head above water.
The meek need to rise and get angrier. Not directed at any specific politicians. But the systems that allow this to take place.