In early 2012, conservative radio host Rush Limbaugh claimed that Sandra Fluke, a Georgetown University law student who advocated for insurance coverage of contraceptives, "wants to be paid to have sex." Over the next few days, Limbaugh attacked Fluke personally, often in crude terms, while a powerful backlash grew, led by organizations such as the National Organization for Women. But perhaps what was most notable about the incident was that it wasn't...