Obama's campaign pitch: more of the socialist social justice pitch. The problem with "fair share" appeals is that he decides what's fair, not us. Every kid had an innate sense of what's fair, but when you get down to cases, he's also selfish and greedy. What's fair? That you get to keep what you earn? Yes. That all Americans should pay taxes? Yes. That the taxes should be applied to transfer wealth from the well-to-do to the poor? No.
Sharing a common burden is one thing, but appealing to envy and encouraging greed for the property of others is destructive, divisive and doesn't really help those who receive it because they don't become capable of producing for themselves. They become drones.