Louis Farrakhan, controversial leader of the Nation of Islam, on Sunday hailed US president-elect Barack Obama as an extraordinary leader but warned his victory would stir up racial animosity. Farrakhan, 75, said that Obama's presidential candidacy had excited the nation in a way not seen since Robert Kennedy ran for the White House in 1968, and that he had been moved by the "oneness of spirit" he saw among voters, particularly on election night in Chicago. But he said the country remained "divided and polarized," and he warned that the president-elect faced a daunting task in taking the reins of...