They came in the dead of night, marking the homes and businesses of their enemies with crude symbols and dire warnings. They plotted against those of other religious faiths and circulated secret lists of alleged traitors to the community and nation. They mailed anonymous threats to those who refused to be intimidated into silence, all the while claiming that they were the true champions of American justice and freedom. The above may seem an accurate description of the sinister activities that distinguished the Ku Klux Klan in the early twentieth century, but in Buffalo, New York, and, in...