Every politician today surely fears having his or her own Macaca Moment: saying something stupid (or worse) in public and having it posted on YouTube or other video-sharing sites.
Former Sen. George Allen learned this the hard way last year, when he famously called an opponent's staffer "Macaca" - a remark that ultimately helped cost him re-election.
Since then, other politicians have found themselves explaining or apologizing for comments that found their way via the Web to wide distribution. Presidential ...