Backlash to Abolishment of slavery was Jim Crow… backlash to Civil Rights Act was mass incarceration… backlash to a black president is a white nationalist
It was a significant number 1/3rd of 650 counties which included Wisconson, Michigan, Iowa, and Ohio that voted for Obama twice voted for Trump. To put in perspective if the reverse happened Hillary would have won North Carolina, Georgia, Arizona and Florida.
Before the nation state really developed the loyalty of the populations of the western world was to individual men or the church. The king or the pope. Or in a more local sense the cardinal or the baron.
Once the nation state was born the loyalty changed. The people’s loyalty was to the idea that they were a nation. While this was a societal improvement it came with some dark consequences. People are willing to fight harder and sacrifice more if they feel like they are the ones who are personally being targeted.
Levee en masse changed everything yet again. The concept of an entire nation under arms and at war was born with modern mass conscription. And the world got to see just how much nation-states could endure before they cracked.