The government of the CSA is shown to believe in the same premise as Nazi Germany.  The politics and policies of exclusion and socio- political stratification are evident in both governments.  The CSA believes that people of color are underneath, dwelling at the bottom of American society.  The Nazis believe that the Jewish people are residing at the bottom of their social order.  Both governments believe in a strict social hierarchy.

Where there is disagreement is in the Nazi embrace of the Final Solution.  The Nazis wished to eliminate those on the bottom of the social stratification ladder.  The government of the CSA is shown to accept the reality of difference and to use the bottom level of its social stratification for slave labor.  It would rather engage in exploitation and manipulation than eliminate like the Nazis.  

This represents how the culture of the Nazis differs from that of the Confederate government.  The Nazis are shown to be intolerant of social and ethnic difference.  The Confederates believe that Northerners and people of color are underneath them.  Rather than seek to eliminate them, though, the film shows that governmental and social policy of the CSA is geared towards exploiting this difference for menial labor and for tasks it deems as not fitting of white Southerners.  It is here in which a major difference between both is evident, with the common core of exclusion and discrimination left intact.