"As Ferguson, Missouri, erupted in August 2014, and media commentators across the ideological spectrum referred to the angry response of African Americans as 'black rage,' historian Carol Anderson wrote a remarkable op-ed in the Washington Post showing that this was, instead, 'white rage at work. With so much attention on the flames,' she writes, 'everyone had ignored the kindling.' Since 1865 and the passage of the Thirteenth Amendment, every time...