Google has apologised after a racist caricature of Michelle Obama became the top result for users searching for pictures of the US First Lady. Anyone typing "Michelle Obama" into Google Images this morning was presented with an altered photo depicting the US president's wife with animal features. In a rare move, Google has posted a message on the top of the results page distancing itself from the image, in the box usually reserved for sponsored links. The note, which states "Sometimes our search results can be offensive. We agree" directs users to a page explaining the technology giant's policy on...