That is one way to look at it. Another way to look at it is that taxes on the richest brackets are at their lowest point in like 50 years, while simultaneously

That is one way to look at it. Another way to look at it is that taxes on the richest brackets are at their lowest point in like 50 years, while simultaneously those people have accumulated an even higher portion of the total wealth/income in the economy. Taken out of context, what you are saying seems significant. Looking at it historically, the rich haven't really had it better regarding taxes and their share of the country's wealth in the last century. Put this way, raising taxes or adding new higher tax brackets seems pretty reasonable.