Earlier this month, CNN and an organization called "Rock the Vote" co-sponsored a Democratic presidential debate. In case you don't remember, it was the one when Howard Dean managed to simultaneously insult both liberal blacks and Southern whites by saying Southerners may be racists but he wants their votes anyway. But that's all history now. What's news is that part of the debate was rigged. It was a tiny little bit of the debate - truly inconsequential in the grand scheme of things - but highly illustrative of why "youth politics" is so bogus in the first place. One of...