It's fun to pick apart the illogic behind the conservative obsession with federal income tax, but what is most remarkable about We Are the 53% is how off-topic it is. Supporters of the 53% Tumblr seem to be under the impression that Occupy Wall Street posters are demanding a higher tax burden on everyone who pays federal income tax. There is simply no reason to believe this, especially since both We Are the 99% and Occupy Wall Street have repeatedly emphasised that they object to the 1% of Americans controlling 40% of our wealth.
Very odd, counter to everything I've heard the protesters themselves saying. See for yourself.