This movie was informative and eye opening, especially to those that need it. I fear many that gave it a low rating did so because they felt their political views and/or themselves were attacked. Importantly, those people fail to realize the true meaning of such a mentally and emotionally jarring and thought provoking movie.
The point being, this isn't about left or right. It's class war; the rich profiting by any means necessary. Even if it means jeopardizing the betterment of middle and lower class citizens as well are fully disregarding the fact that our planet is strained. For those who didn't understand and/or felt targeted by this film, I'd advise putting bias aside and truly look at the bigger picture.
Look at the glaring message and take time to process it. I guarantee you'll view it differently and perhaps even learn from the message presented.