The main themes seem to be twofold:
1. Wall St represents the greed of the 1% (the small minority who owns 80% of the money and pay very little if any taxes) and
2. The wars (esp. in Iraq and Afghanistan) where we have wasted billions of dollars that could be used in the US to create jobs.
Americans are fed up with the corruption of Wall Street, who has not been made accountable for the collapse of finances globally. Americans are also fed up with a "Do Nothing" Congress, led by a Republican majority, who seem hell bent on passing anti-choice legislation (7 bills this year) while turning a blind eye on the economic crisis.
In the end, it will be up to you, the average reader who may or may not see this post. Join, get involved. That's democracy in action.