Photograph of traders at the New York Stock Exchange by Richard Drew/AP The Dow Jones fell 5.56%, losing 444.99 points to close at 7,552 points; the Nasdaq fell 5% and the S&P 500 plummeted 6.71%. The NY Times reports, "Wall Street doubled down on its losses on Thursday, just a day after financial markets closed at their lowest point in nearly six years." And the Wall Street Journal says, "Stocks' sharp slide continued Thursday,......