Mitt Romney has dedicated himself to the idea that the biggest problem in this country is that the poor and middle class have it too good.
This is actually one of their powerful little rhetorical games. Lots of people don't feel very rich. All of them know they pay taxes, because all of them do pay taxes. Even if they actually don't pay any federal income tax, they pay payroll taxes, perhaps state and local income taxes, sales taxes, property taxes, etc... But suddenly they hear half the country doesn't pay any income taxes! Who are these people? Undeserving people, of course.
And when President Romney massively increases taxes on the vast majority of Americans, don't look for the Village to point out that it's the "biggest tax increase in history" or whatever. It'll just be asking people to pay their fair share.