When Alaska Gov. Sarah Palin announced her resignation two weeks ago it was after a series of strange, petty bouts with her detractors. Many "frivolous ethics violations" had been alleged against her, she noted. David Letterman had told an ugly joke about her daughter. A blogger had posted something that was probably not true. Someone had photoshopped a radio talker's face onto a picture of her baby -- a "malicious desecration" of the image, in the words of Ms. Palin's spokeswoman.

Team Palin got duly indignant at each of...