OPEC's announcement that it will not reduce production sent prices crashing lower, while U.S. financial markets were strong and again reached new highs. Agricultural commodity markets opened lower but turned higher in the first 15 minutes of the session, led by a rally in wheat. General Comments It was Black Friday across the U.S., which signals the official start of the holiday shopping season with massive sales and shoppers staying up all night to get the best deals. It was also the day after the Thanksgiving holiday, and markets are supposed to be quiet while everyone is out shopping. That certainly wasn't the case in some markets today, specifically crude oil. Oil plunged yesterday on the world market, and that fall continued when U.S...