The sources of that conflict, having never been adequately resolved, continue to this day. It is, in fact, precisely what brings many to this forum.
One faction of this country believed(and still believes) in a centralized federal government that dictated, and controlled all.
An opposing faction believed(and still believes) in individual, and states rights over exercising said controls.
Whether those factions are called yankees & rebels, or liberals & conservatives, the same conflicts and struggles continue to be fought.
How does that fit into "Shame of the Yankees"? It's clearly an attempt to connect people of today to 140 years ago. It's fatuous and divisive.
BS. Freedom vs Slavery was the 1860 conflict.