Of course there will be unpleasantness, and the vast majority of it will originate from Trump. Whatever candidate wins the Democratic nomination, he'll insult and belittle them, come up with some stupid nickname for them and repeat it over and over and over, tell his base that he's their savior and if we elect a Democrat it'll be SOOOOOOOOCIALISM, and the drooling mouth-breathers who attend his hate rallies will come in their pants.
Trump isn't the problem, though; it's Trumpers. That any human being who isn't insane or utterly evil follows this piece of decaying slime boggles the mind. How can you possibly tolerate that man, let alone ADMIRE him? Horrid and shameful! (And yes, this means YOU.)