You can shame some people and the Occupy movement already has. Among the billionaires there are some who feel the weight of their wealth, their responsibility to society. Warren Buffet felt that weight even before the movement got started, and he's been joined by several others since.
But most of the superrich are immune to the calls of conscience. They aren't troubled in the slightest. They believe in the righteousness of their wealth like Louis XIV believed in the divine right of kings. But deep in their cold hearts they harbor fears, fears that can be exploited.
That is the job of the Occupy movement, scare the bejeezus out of the filthy rich. It's a job of theater. That's why the specific ideology of the Occupy movement doesn't matter much. What matters is that they keep occupying.
Winter is coming, the cops are getting nervous, the rhetoric is heating up. The Occupy movement may diminish, it may fade away.
But the Occupy movement can succeed beyond their wildest dreams if they remember the one immutable commandment of the theater.
The Show Must Go On.