The Republicans have trotted out an old talking point that you don't hear them use much with their taxes so low, but they think that you peasants should pay all the taxes. So here goes, "Say I start a business and so does my friend. His business fails and I succeed. Why should I be penalized for my success by paying income taxes, while he pays none?"
This almost sounds reasonable, and the knee jerk reaction is to try to justify taxes for all the good reasons we pay taxes. This is entirely wrong, that's what they want you to waste time on, while the basis of their argument continues to stand.