WASHINGTON Presumably unaware of the presence of a live microphone, Senator John Kerry, campaigning last week in Chicago, let loose with his opinion of Republicans opposing him as "the most crooked, you know, lying group I've ever seen."My first reaction — like that of millions of parents and schoolteachers around the country — was to wince at a prominent politician's use of "you know," a halting interjection that has been cluttering the speech of teenagers for years.Only later, as the rest of the Kerry condemnation sunk in, did I wonder: Was it wise for a candidate for president to characterize...
