What are some of the assumptions and myths that are debunked?

Based on the movie (link below), pick any ONE of the following questions to discuss:

What are some of the assumptions and myths that are debunked?
What are the different arguments for trickle-down economy and middle-out economy?
According to Robert Reich, who should we emulate in order to reduce income inequality and why?
Link: https://www.reddit.com/r/Documentaries/comments/3oeh0o/inequality_for_all_2013_robert_reich_put_the_full/
the password is bernie2016