I don't think she is "attacking free markets" ... free markets suggest a democratic adaption of free market solutions. I think she's basically saying, in one way or another, that recent economic developments/failed developments are anything BUT free market developments; they are, as presented here, things that would never actually work in a free market society but rather have been shoved down everyone's throats while they were too busy trying to survive a disaster to actually participate in a free market.
So I don't see it as an attack on the free market system as much as a suggestion that much of what is heralded as free market solutions are anything but - rather they are force-fed solutions imposed undemocratically by a small cross-section of society which stands to benefit from whatever "solution" they offer to a crisis.
In other words, I think she's saying that most "free market" cheerleaders don't really seem to believe in free markets themselves and instead seem to believe that a small, centrally-organized group should centrally manage market systems (ie, communism) by exploiting people's weakness, fear, trauma, insecurities after a disaster.
"The movie just mixes togetehr totally unrelated things and claims a connection."
Not really. It proposes a hypothesis based on a verifiable doctrine proposed by a very influential person and then looks at the last few decades of history and tries to see if it can fit that hypothesis, which it seems to do very well, then it suggests that this doctrine is, in effect, an unspoken aspect of modern life.
To the extent that it can PREDICT economic phenomena, then that connection is very real.
I for one think the next time there is a natural disaster like a tsunami or something, people suffering the most will most likely be ignored while governments and corporations will rush to make development deals for luxury high rises, hotels, shopping malls, casinos, etc with no opposition from people too busy trying to survive to put up opposition.
"So who is Naomi Klein, a Super-Communist?"
It's funny you say that when all she's basically saying is that most people in the public eye cheerleading capitalism are actually behaving more like communists themselves ...