Once upon a time, people in red states and blue states did not like each other. They used to argue. A lot. Especially on TV and the radio. Then they decided their children should feel this way, too. That's why this holiday season we have books such as "Why Mommy is a Democrat" and "Help! Mom! There are Liberals Under My Bed." Hey kids, can you say "culture wars?" No surprise, really. These books are natural extensions of the political rants now a staple of the adult best-seller lists. Last year, conservative talk show host Bill O'Reilly rolled out "The...