03/28/2008 02:45 am ET Updated May 25, 2011

Untraceable Emails Spread False Obama Rumor

When Fox News aired a report in January claiming that Sen. Barack Obama had been educated at a radical Muslim madrassa, his campaign beat the story back -- hard -- with the candidate himself going on television to call it "ludicrous" and a "smear."

And his aggressive defense worked, or so it seemed at the time: The notion that Obama has secret Muslim roots faded from the mainstream media, and even from most conservative blogs and magazines.

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