Sorry, but totalitarian regimes and citizens of a democracy who selectively, and often hypocritically, incorporate constitutional norms into their own understanding of civic life are categorically different things.
I certainly agree that there are many people in our nation who are basically authoritarian-minded. In free societies, that authoritarianism is usually expressed in “freedom for me, but not for thee” terms. It is a phenomenon that is presently far more pronounced and dangerous on the right, where it borders on mainstream thought, than on the left, where it is a characteristic of the most annoying but irrelevant part of the fringe. But democracy is premised on the assumption that a certain percentage of people in any population are going to wired for authoritarianism and that their inclination, being more powerful, has to be checked by formal institutions rather than social pressure.
The reaction to Maines’ 2004 comments basically falls into three categories: economic decisions to not give financial support to people whose opinions one finds repugnant, zealous expressions of disagreement with those whose opinions one finds repugnant and death threats. The first two are the conduct of free people used to exercising autonomy in their economic life and the exercise of free speech. Nobody ever promised that those rights would be exercised wisely or that their exercise would be pretty or noble. But authoritarians have rights or none of us do: it’s just that simple. The fact that they have to have rights, and that they’d gladly take them from others if given a chance, creates a need for constant vigilance, but it’s a feature, not a bug, of the worst form of government ever conceived by the mind of man except for all the others.
The death threats are, of course, the work of imbeciles, the maladjusted and the deranged. Democracy doesn’t have a cure for that either, but it does, at least, have a better track record at keeping the imbecilic, maladjusted and deranged out of high office than totalitarian states do.
Like I said, categorical difference, not one of degree.