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 these. They took special, detailed offense. They issued statements magnifying their...