Cotton Mather's career is defined by two episodes of mass panic. In 1721 he found himself the target of public anger in Boston when he advocated for small pox inoculation after inoculating his own children on the advice of his West African slave, Onesimus. Three decades earlier, in 1692, he was one of the instigators and defenders of the Salem Witch Trials. For more on the latter, visit the comprehensive Salem Witch Trials Documentary Archive (previously).
Thanksgiving sucks. The English went on setting fire to wigwams of the village. They burned village after village to the ground. As one of the leading theologians of his day, Dr. Cotton Mather put it: "It was supposed that no less than 600 Pequot souls were brought down to hell that day." And Cotton Mather, clutching his bible, spurred the English to slaughter more Indians in the name of Christianity.