I think that you greatly misperceive a disunity that does not exist.
I disagree with nearly all of my friends on political matters, yet we get along fine. I have friends who voted for Hillary, and friends who voted for Trump, and we all work together, socialize and agree for the most part that they were both terrible candidates who would have taken (and will take) us to dark places, and we’d better be ready for that.
I know just as many people who held their noses to vote for Trump as I know those who held their noses and voted for Hillary. I know committed supporters of each – and they get along fine, too, even if they argue throughout the day. Having disagreements is normal, natural, and does not disturb the sensibility of rational people who understand that difference in political outlook is not the be-all and end-all of who we are.
If you’re seeing other than that, then it could be that you live in an echo chamber where people have painted “the other” as a demon, and are now afraid of the demon that’s been painted, or (less likely in this group, I suppose) you consider yourself part of the “winner’s circle” and somehow in charge of making up an “enemies list” of folks to transport to the gulags.
Most of us in the real world don’t operate like either of those extremes.