Long before the Civil War, antislavery activists, both black and white, were fighting at the state level for the equality of blacks. In Until Justice Be Done, Kate Masur has written a rich and rewarding history of “America’s first civil rights movement from the Revolution to Reconstruction.” It is the story of “a struggle for racial equality in civil rights that spanned the first eight decades of the nation’s history, a movement that traveled from the margins of American politics to the center and ended up transforming the US Constitution.”