Considering that they, like you, think they're right, you can at least grant other human beings the same dignity you wish to receive. Obviously, everything is subject to the situation but, from a big picture perspective, viewing yourself and others as fallible, as opposed to a Hollywood-esque fight between Good and Evil, is a greater exercise in humility. Like pulling the trigger on a gun, hostility and rejection should be a weapon reserved until there isn't an alternative.
If you think there's no hope for a common understanding with Republicans(I think it's safe to assume that's whom you are referring to), then I guess all I have to say is that's kind of sad because I'm sure that you have family and friends who vote Republican(whether they tell you or not); why associate with them at all if you think a low-trust society is warranted?
Think of it this way. A Republican might say:
"How much comaraderie should one really be expected to show for an opposing party that actively opposes America as an individual nation, wants to impart an economic structure that's been disastrous in other parts of the world, embraces censorship, participated in proxy wars and knowingly murdered civilians with drones, uses minorities as political tools, hates white people, expanded the surveillance apparatus, and wants to take our guns away?"
I know some imbecile is probably going to take that hypothetical quote as being my own position and attempt to argue every one of those points. Save your breath, whomever you are, because that's not at all what I'm claiming to believe.
Whether they are actually right or wrong, they are Americans who, like you, care about the destiny of the country. That's where your camaraderie begins. If it ends there too, then too bad, but not having that common understanding is dangerous and useful to anyone who wants to control the masses.