September 16, 2003, 10:30 a.m.On PatrolDiane Ravitch goes inside a protection racket.A Q&A by Kathryn Jean Lopez iane Ravitch, research professor of education at New York University, is author, most recently, of The Language Police: How Pressure Groups Restrict What Students Learn. Ravitch recently talked to NRO about the Language Police. Kathryn Jean Lopez: Who are "the language police"?Diane Ravitch: Read the book and you will see. It is now a process of "bias and sensitivity review" for weeding out anything controversial or offensive. It is self-censorship, which publishers think is high-minded and necessary. It is the result of...