This is so much easier to explain than to convince people that globalization is a reality and that the only option in many of these cases is to retrain for a high skilled economy that the US always was, and must continue be in order to be an economic superpower. No matter which party won, this section of people would be anti-establishment and unhappy with the present because nobody can break this bad news to them.
A software engineering analogy is to convince leadership that you have to refactor your stack in order for it to scale, during which new products would suffer. BUT, its easier to convince them to hire 10 more engineers who can build new product on an aging stack, which may not solve the problem, but is relatively easier to sell.
In 5-10 years, who will explain to the millions of automobile drivers (taxis/trucks/uber/lyft/..) that their jobs are dying as well? Nobody. Wait for another anti-establishment election!