Fanny Stenhouse writes that Brigham must have implicitly approved of the massacre.
Fanny Stenhouse, "Tell it All": The Story of a Life's Experience in Mormonism (Hartford, Conn: A. D. Worthington & Co., 1878), 337
This is the story-most imperfectly told-for I dare not sketch its foulest details,-of the Mountain Meadows Massacre. Brigham Young, who was at the time Governor of the Territory and also Indian Agent, made no report of the matter. Let that fact of itself speak for his innocence or guilt. Would any other governor or agent in another Territory have been thus silent? John D. Lee, and Dame, and Haight, and the other wretches have never been brought to trial or cut off from the Church, although their monstrous crime has never been a secret, nor have any endeavors been made to conceal it.