Wall Street drops as focus shifts to cloudy 2012

NEW YORK (Reuters) - Stocks fell on Wednesday after a hefty year-end rally and the S&P 500 erased gains for the year as investors shifted focus to what is expected to be a difficult start to 2012. After a 5 percent rally last week that helped Wall Street post its best quarter in over a year, the S&P 500 pulled back below its 200-day moving average, a closely watched indicator of market strength it has struggled to hold this year. Investors concentrated on 2012, with Europe's debt crisis as well as a slowdown in Asia and the impact of Europe's recession on a U.S. recovery on the agenda. ...