In 1913, a pernicious little busybody named M. Blair Coan spied on visitors to an art exhibit in Chicago. Coan, an investigator for the State Vice Commission, was upset by the "immorality" of modern paintings and suspected that Matisse's painting of nude dancers might even be "attracting the gaze of young girls." Coan stirred up a great public outcry against immoral art. He then turned his talents to spreading alarm about the imminent communist takeover of the United States. In one of his books, The Coming Peril , Coan warned that socialism would ruin society by encouraging free love and giving women the right to vote. For Coan, the most "monstrously immoral" threat was that socialism might permit white women to consort with men of other races: The negro and the white woman, the white woman and the Chinaman, They draw no race line or color line in the [Socialist] party. Each new generation must battle its own versions of Coan. Personally, I wouldn...