The modern connection between Nazi symbols and the Confederacy
“At the white supremacist rally in Charlottesville over the weekend, marchers carried Confederate and Nazi flags side by side, protesting plans to remove Confederate statues from the city’s Emancipation Park. That would have surprised Southerners not that long ago. While both the Confederacy and Nazi Germany waged wars to defend white supremacy, those two symbols were mostly kept apart for decades after World War II. How those two symbols of white supremacy have come to overlap tells us a great deal about how white racist extremism developed – and where it might go.”
The very short answer appears to be: David Duke.