Most in the American left have heard about this film; in all likelihood they have had it raved about to them. I wrote a few thoughts on why that might be and published them at Red Wedge:
Capitalism is an irrational system which refuses to see itself for what it is. Like an obnoxious trust fund kid slumming it at a dive bar, it cannot help but loudly declare how ingenious and deserving it is. Accepting its arguments for how things are and how they change is to accept the argument that there is some method underneath the layers of madness, that its opulence can somehow be separated from its exploitation, that it has something other than an ever-deepening inhumanity in its future.