Raising taxes doesn’t mean quite the same thing as redistribution of wealth, at least in the sense that some socialists or Marxists refer to it. Obama’s plan is the redistribution of taxes, and Republicans are very clearly distorting it for political leverage. Raising taxes is just that, and is used for a host of causes. Redistribution of wealth is more wholesale, and involves nationalizing industries, compulsory acquisitions, and sometimes heavily taxing inherited wealth. If raising taxes means redistributing wealth, then it follows that lowering taxes concentrates wealth, which clearly makes no sense either.
However, I would agree that in the current crisis it is probably not the best time to be talking about raising taxes, but in the long term I don’t see how the huge US deficits are going to be paid for.