"The ideal subject of totalitarian rule is not the convinced Nazi or the dedicated Communist, but people for whom the distinction between fact and fiction, true and false, no longer exist.” - Hannah Arendt
Republicans are working to turn their true believers into such ideal subjects.
Illegal Haitian immigrants in Springfield are eating the dogs! They're eating the cats! OK they're not illegal immigrants. OK they're not in Springfield. OK they're not eating the dogs. OK so we created that story and it's not real. But the important part is that you BELIEVE the underlying message, even if it's based on a lie. Sure, it's fiction, but it's really fact! Sort of. The underlying message is real.
Trump really isn't a rapist, even though two separate juries found that he lied when he said he didn't rape E Jean Carroll. Again, you just have to blur the distinction between fact and fiction a bit, and he's in the clear.
As Kellyanne Conway explained, republicans use alternative facts, not real facts. Because they are just as good, and they say exactly what republican leaders want them to say. Again, what's important is what you believe, not what is true.
A staffer in the GWB administration came right out and admitted this. The staffer said that journalists were "in what we call the reality-based community . . people who believe that solutions emerge from your judicious study of discernible reality. That's not the way the world really works anymore. We're an empire now, and when we act, we create our own reality. And while you're studying that reality—judiciously, as you will—we'll act again, creating other new realities, which you can study too, and that's how things will sort out. We're history's actors...and you, all of you, will be left to just study what we do."
Republicans are no longer in "the reality based community" and they mock people who are. They create their own alternative-fact reality, and expect supporters to believe it. And when you get people used to believing untruths, the distinction between fact and fiction goes away, and there is only loyalty to the one person who promises to save them from the fake horrors of the world around them.