The Catholic Church? All this nasty material stuff isn't the real you, there's a magical kingdom "beyond" all this where you could live forever in your sparkly immaterial form, Satan has dominion over this world, always seeking ways to deceive you. It's all a big mystery you can't understand. Don't believe your mind, don't believe your senses, just believe and obey us cough cough, I mean God.
For secular antirealism, I recall Hitchens relating that the reaction to Orwell behind the Iron Curtain with respect to DoubleThink was "how does he know?" I don't believe that the communists had an official antirealist stance, however. They were supposed to be scientific socialists. But when it becomes illegal and dangerous to disagree, people are forced into making statements contradicting their own minds, which is antirealism in practice if not in "official ideology".
And of course, saying "I am antirealist" is not the kind of direct factual statement one should expect out of an antirealist. I'd expect mysterion or collectivist piffle.
Okay, it has become clear to me that you, the OP, and I are all have different definitions of "realism" in mind. Furthermore, this threads is full of confusions and people talking past each other. I lay the majority of the blame on the OP for using the term in a way completely alien to mainstream philosophy, but I messed up myself by only half-reading it and assuming he was discussing the philosophical position of realism (as it is used, say, in ethics or philosophy of science) rather than a mix of mystical thinking, circular reasoning, appeals to emotion, and selective scepticism.
From Being a Realist (even if you believe in God):
My mother, who doesn't call herself a theist (I think she's agnostic), doesn't even accept realism. She doesn't even agree with this:
That's little more than tautologies here. Yet it elicited an impression of being forced to believe. I know because she told me about the totalitarian dangers from such narrow thinking.
I'm happy to have finally found the root cause of our ongoing disagreement, but now, how can I deal with that? It looks pretty hopeless, but just in case, does someone have a suggestion, or should I just leave it at that? (My ego doesn't like it, but giving up is an option.)
Now I'm relieved to know that in near mode, she's a complete realist. This craziness only shows up in far mode.