But of course many millions of Americans do have negative opinions about such trends — and all the finger-wagging and name-calling in the world isn’t going to change that. Those millions of Americans are our fellow citizens. They will continue to vote and therefore exercise political power. Can anyone seriously believe that attempting to declare their views beyond the political pale and denying them a seat at the policymaking table will accomplish anything beyond radicalizing them further, potentially sending them outside of the existing party system to do battle with it from an even more extreme position?

Politics at its most fundamental level is a debate about who we are — all of us. The intensifying tendency to set the terms of that debate in such a way that only liberals can take part isn’t going end well. Those who end up excluded will claim that their opponents are just trying to win dirty.

And they will be right.