The Northern Right isn't so much different, except that it has no heritage of slavery to sanitize into oblivion.
Not in the Midwest, but there absolutely was slavery in the Mid-Atlantic states, and to a lesser extent, in New England.
Slavery in New England was extremely limited compared to the South, and the region's foremost support of abolitionism more than absolves them of any guilt they had, imo.
So a working class Southerner is guilty because his great great great grandfather's boss had slaves?