Civility is not the cure to division, it is the cause.
Civility allows people to be polite in their speech, but radical in their beliefs. It creates a culture of duplicity, in which people say one thing in public, but do another in private.
They never share their beliefs, so they never have to examine or defend them. They cloister in insular communities, and scapegoat everyone outside of them.
The one good thing that came of the Trump presidency is that it got all of the bigots to feel comfortable enough to say the silent part out loud. They revealed themselves for who we all knew they were all along but pretended not to be.
The cure to division is radical honesty and accountability. We are not going to pretend that one man's ignorance is equal to another man's knoweldged anymore. That is over.
The "facts over feelings" crowd needs to be presented with the facts, and shut down. We are not debating the merits of their conspiracies against reality. This is what is true, this is what is going to happen, end of discussion.
Stupid people need to stop being coddled, and allowed to have "alternative facts," and alternative media, and separate divorced-from-reality realities.