The hits just keep on coming for the Dow Jones Industrial Average (INDEX: ^DJI). Fresh off its worst month in two years, the Dow dropped today into negative territory for the year after a dismal U.S. jobs report. Not only did payrolls increase by just 69,000 in May, their lowest increase in a year, but April's jobs number was revised significantly lower than initially reported. The unemployment rate rose from 8.1% to 8.2%, its first increase since June 2011.

But the jobs report was far from the only negative news today for investors. U.S. manufacturing growth slowed in May, and data showed that the eurozone manufacturing sector continues to contract, falling to a three-year output low. Manufacturing growth also came in lower than expected in China, prompting renewed calls for the government to step in with a more pro-growth agenda.

Not surprisingly, all of the Dow's 30 components are in the red on the day, with some faring much worse than others. Bank of America (NYSE: BAC) is among the three biggest losers on the day, down around 4% in early afternoon trading. One of the worst-performing sectors today is financials, which tend to be more sensitive to the U.S. and global economy. American Express (NYSE: AXP) and JPMorgan Chase (NYSE: JPM) have now dropped around 4% and 3%, respectively. Still, it could be worse for some investors; Bank of America and American Express are still up 26% and 13% year-to-date, respectively, solidly outperforming the Dow.

Outside the Dow, Facebook (Nasdaq: FB) couldn't escape the carnage, either, as the stock dropped over 5%. Investors will be hoping for a repeat of yesterday, in which the stock rose from -4% in early afternoon trading to finish up 5% at the closing bell. But that doesn't seem likely. In addition to the terrible data for the economy as a whole, investors continue to question Facebook's ad-based revenue model and its inability to monetize its mobile traffic.

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This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.