Since we have been on a Thomas Nast tear lately, it is only right and fitting that we should return to him at Christmas, as he is more or less the inventor of our Santa Claus.Surprisingly, Nast's very first depiction of Santa Claus was a piece of political propaganda, done at the request of President Lincoln himself. Lincoln thought a drawing showing Santa Claus in the Union camp would boost the North's morale and demoralize the South. It is reported to have accomplished both of these goals.Shocking, isn't it? Our one party media's delicate sensibilities would not stand for such...