Steven DLevitt's latest academic paper is on the Ku Klux Klan. Incredibly, the Klan had millions of members at that time (the 1920s), and most of them were reasonably well-educated. Based on a variety of data sources, we argue that, despite its size and education levels, the group nevertheless had little measurable impact on society or politics. It was, however, an incredible engine for generating profits for Klan leaders. LRon Hubbard wouldn't be shocked.