US rapper Ludacris is facing criticism for the use of lyrics in his latest song 'Politics as Usual'. The track, which is in support of Barack Obama's presidential campaign, has been rejected by Obama himself for being "outrageously offensive". While the bulk of the song celebrates Obama's run for presidency, many lyrics attack his opponents, calling President Bush 'mentally handicapped', Hillary Clinton an expletive, and stating that Republican candidate John McCain 'don't belong in any chair unless he's paralysed'. < ...