To understand a person, walk a mile in their shoes.
Not a lot of shoe-swapping going on in the world today, is there? Historians assure us there have been other periods of polarization in American history (see: Civil War), but we have to live in this one. Unless we can do something about it.
Sharon Schuman introduces us to the concept of "dialogic freedom" in her book Freedom and Dialogue in a Polarized World, which points the way to understand the viewpoints of others.