The BP oil spill - millions of gallons of oil leaked into the Gulf of Mexico, coastal businesses from Houston to Tampa shuttered, the potential for higher energy costs across the country and untold ecological damage. But according to Mother Jones magazine's David Corn, there is a silver-lining in all of this - that is, if you're a Democrat. MSNBC's June 21 "Countdown with Keith Olbermann" deviated from its usual efforts to blame the previous administration for the oil spill and instead gave thanks that the spill led to Rep. Joe Barton, R-Texas, apologizing to BP CEO Tony Hayward in...