Could one not conceive of a world where there is a group of actual human beings that hold different values to one’s own ?
Is that so inconceivable to a person’s worldview that it breaks a person’s sense of reality ?
Seems like a weird place to start. But here we are.

I’m not that sure that history will give a shit about US American Democrats or US American Republicans.
Those labels will be lost. “US American” concentration camps, disappearing citizens, ignoring court orders, death squads … there will be no “oh that was just the Republicans”; it will be “oh that was just the Americans”.