...one more justification I just read:
"A tax hike on the rich can be very beneficial to our economy if done properly.
That is, right now the most profitable investments out there, available only to the rich, are much more like gambling than what we would think of as investments. So they should be taxed like gambling, such as some lucky individual who hit the jackpot in Vegas.
The *idea* here is to get the rich to move their investments to actual investments that help our economy, at a lower tax rate, and away from gambling.
This is a smart idea, and has long been used for things like tax free municipal bonds, because they work."
That's not from DU or Daily KOS would you believe?