Listen, Liberal or, What Ever Happened to the Party of the People? by Thomas Frank published in 2016. Reforming the Democratic Party, final two paragraphs of the book.
“The Democrats have no interest in reforming themselves in a more egalitarian way. There is little for the rest of us can do, given the current legal arrangements of this country, to build a vital third-party movement or to revive organized labor, the one social movement that is committed by its nature to pushing back against the inequality trend.
“What we can do is strip away the Democrats’ precious sense of their own moral probity–to make liberals live without the comforting knowledge that righteousness is always on their side. It is that sensibility, after all, that prevents so many good-hearted rank-and-file Democrats from understanding how starkly and how deliberately their political leaders contradict their values. Once that contradiction has been made manifest–once that smooth, seamless sense of liberal virtue has been cracked, anything becomes possible. The course of the party and the course of the country can both be changed, but only after we understand that the problem is us.”