The New York Times has an interesting article (with graphs) about how the total tax burden has changed over the years for people in different income ranges. It suffers from one very significant flaw, the same flaw that nearly every analysis from the progressive side shares: it completely ignores the way that tax deductions, exemptions, and credits have changed over the years. Include those, and this picture changes dramatically. Leave them out, as the NYT did, and you make a solid-looking argument for raising taxes on higher-income folks.
This article has already been cited over 1,000 times in the online media. You can be sure it will be the foundational reference for the argument to raise taxes.
Doom. I smell doom...
