Prejudice in fast-food ad ruins appetiteBob Ray Sanders commentary Maybe it is because the country has been immersed in the saga of U.S. Sen. Trent Lott, R-Miss., that a currently running fast food TV commercial hit me the wrong way when I first saw it Sunday afternoon.But I think not.No, the more I think of the ad -- designed to get the viewer to try two new sandwiches offered by the restaurant chain -- the more I'm convinced that it is a not-so-subtle play on the overt racial discrimination that once was the norm in this country.I'm so offended, in...