Well, to paraphrase your next sentence: "that these people exist in the Democratic party is impossible to deny, to tar and feather the entire Democratic party as this way is how we get to the binary world view."
In particular, I am a liberal in a rural Pennsylvania county that voted 75% for Trump, and I know that my conservative neighbors do not hate gays, minorities, and women. (Most people I've talked to were responsive to his position on coal mining; I'm not sure what will happen in four years if those jobs don't come back.)
>This is why I say people are expressing a binary worldview. From what I can see, many are not expressing that there could be a third possibility. Or fourth. Or a myriad of options.
You mentioned Twitter; if Trump being a Nazi is one bad option, and there are x-1 other good options, I think it's only natural that the kind of people who like to tweet are going to tweet about what they think is the most dangerous one.