Early in December, a 13-year-old Israeli girl, Shachar Rabinovitch, asked ex-Cambridge professor Dr. Marsha Levine for some assistance on a school assignment that was related to her field; Dr. Levine is an expert on horse domestication. It was an innocent inquiry, which violently turned political when Dr. Levine refused to help Rabinovitch until "there is peace and justice for Palestinians in Palestine" (via JPost): I'm from Israel," her e-mail began. "I'm doing an assessment for school about horses, and it will be great if you can answer a few questions that I will ask." Instead of receiving answers to her...