The thing about civility is this: civility is great when you are discussing tax policy or whether the trim should be painted blue or grey. Civility is deadly when discussing whether human beings are to be afforded equal dignity.
In Charlottesville in 2017, in the leadup to Unite the Right, a certain kind of person was obsessed with civility. This person, liberal, white, and smarter than you, was convinced they knew how to take down hate.