As the Democratic presidential contestants battle toward a possible resolution in the March 4 primaries, it doesn't take much to set off the campaigns and commentators. On Monday, it only took an 18-month-old photograph of Barack Obama dressed as a Somali elder during a visit to Kenya. Where it came from The Drudge Report, a news and gossip Web site, posted the photo Monday and said it was being circulated by "Clinton staffers." But Howard Wolfson, a spokesman for Hillary Clinton's campaign, said: "I just want to make it very clear that we were not aware of it, the campaign...