I would point out the decay that has already taken place. In our effort to be "decent," when the opposition holds no such qualms about invective, we have surrendered quite a bit of ground.
I agree that it is unfortunate that we lost decorum in this country, but we ought not bring hor d'vour toothpicks to knife fights. And we ought recognize that complaining about the knives will not hold sway over those who have already bought into the lies.
Good point(s).