.You oughta watch this. It's entertaining and makes you say, "Of course! We should have a flat tax! Why don't we do it?"
The answer of course is that politicians loathe anything that even smells of true fairness. They trade in class envy and favors. A flat tax would take away their power to grant favors to fat cats and the poor alike.
By the way, YouTube is having serious troubles running embedded videos through proxy servers. If you see an error message just click the image again to watch the video directly on YouTube.