Of course they weren't acting in the best interest of the American people. Nor do they have to. It is up to the government to effective regulate the free market. Not over. Not under. Just right. It is in this sweet spot that resposible gains can be achieved.
You are going to have to prove to me that they can run a free market society. Right now, the government is shut down, we are 30 some odd hours from defaulting on the debt. You want this very organization to run your stock market?
Here is a list of socialist countries. Tell me which ones have been a wild success.
http://en.wikipedia.org/wiki/List_of_socialist_countries
And before you say China, let me suggest you take a look at their human rights record before you say that is a runaway success.