WITH THE presidential campaign clock ticking down, Sen. John McCain has suddenly discovered a new boogeyman to link to Sen. Barack Obama: a sometimes controversial but widely respected Middle East scholar named Rashid Khalidi. In the past couple of days, Mr. McCain and his running mate, Gov. Sarah Palin, have likened Mr. Khalidi, the director of a Middle East institute at Columbia University, to neo-Nazis; called him “a PLO spokesman”; and suggested that the Los Angeles Times is hiding something sinister by refusing to release a videotape of a 2003 dinner in honor of Mr. Khalidi at which Mr. Obama spoke. Mr. McCain even threw former Weatherman Bill Ayers into the mix, suggesting that the tape might reveal that Mr. Ayers — a terrorist-turned-professor who also has been an Obama acquaintance — was at the dinner.
