White Democrats opposed Reconstruction not because it was a failure, but because it was working. Today almost all historians of Reconstruction hold t… - James Loewen

In the twentieth century no one's hands were clean. Korean troops committed more atrocities per capita than Americans, in Vietnam. Vietnam of course attacked Cambodia. Japan attacked almost everyone. And so on.

Ideas made the opposite impact in the Confederacy. Ideological contradictions afflicted the slave system even before the war began. John Brown knew the masters secretly feared their slaves might revolt, even as they assured abolitionists that slaves really liked slavery. One reason his Harpers Ferry raid prompted such an outcry in the South was that slave owners feared their slaves might join him. Yet their condemnations of Brown and the 'Black Republicans' who financed him did not persuade Northern moderates but only pushed them toward the abolitionist camp. After all, if Brown was truly dangerous, as slave owners claimed, then slavery was truly unjust. Happy slaves would never revolt... White Southerners founded the Confederacy on the ideology of white supremacy. Confederate soldiers on their way to Antietam and Gettysburg, their two main forays into Union states, put this ideology into practice: they seized scores of free black people in Maryland and Pennsylvania and sold them south into slavery. Confederates maltreated black Union troops when they captured them.

Songs such as 'Nigger Doodle Dandy' reflect the racist tone of the Democrats' presidential campaign in 1864. How did Republicans counter? In part, they sought white votes by being anti-racist. The Republican campaign, boosted by military victories in the fall of 1864, proved effective. The Democrats' overt appeals to racism failed, and anti-racist Republicans triumphed almost everywhere. One New York Republican wrote 'The change of opinion on this slavery question ... is a great and historic fact. Who could have predicted ... this great and blessed revolution?' People around the world supported the Union because of its ideology.