On the morning of May 2, the financial headlines were abuzz with the news of Osama Bin Laden's death and its positive impact on the stock market: "Stock Market Celebrates Killing of Bin Laden" (The Wall Street Journal)
But despite a positive open, stocks closed lower on May 2. Undoubtedly, in the days ahead we'll hear analysts explaining how Bin Laden's death is not that "bullish" of an event, after all.
On that same note, MarketWatch.com ran an interesting story on May 2 that quoted from a research paper which found "little evidence that non-economics events have a big effect on the stock market."