Schooled by Trump, Americans are learning to dislike their allies

Both are brainwashed, just in different ways. Republicans are wired for fear. Democrats are wired for passivity.

The republican version is a lot more dangerous, but the democrat version is a lot more insidious.

That's right. What the US is doing is pretty much just cosplaying Nazi Germany. The Nazis weren't evil geniuses, they were pretty stupid and disorganised (a hallmark of every fascist regime is everlasting internal rivalry for more influence) and put their idiotic little ideology and personality cult above all else (for example, deportation trains to the death camps had precedence over much needed military logistics, even very late into WW2, also Nazi big wigs regularly engaged in disastrous micromanagement because they could, like when Hitler personally put new fighter aircraft development on hold because he wanted bombers, at a time when regular Allied air raids on Germany were already a reality), inevitably leading to picking a fight with pretty much the entire rest of the world and predictably losing that. The only thing the Nazis were clever (enough) with was propaganda. Propaganda that lasts till today by painting them as the ruthlessly efficient and technologically advanced evil masterminds. (with only the "ruthless" and "evil" being true) See any similarities already?

Well, they did put some idiot in charge and build a personality cult around him, but the idiot wasn't malicious.

The US is most similar to the 2030s-early 2050s US in the Chinese-written White or Black (Chinese variant of Brave New World).

• An alien shows up, and an international team sent to investigate kill it by accident.
• A bunch of aliens show up a few years later, but they're content to float in the sky.
• After deciphering their language, humanity discovers that the aliens seek asylum on Earth, and they claim that the human race is doomed unless humanity does some immediate course correction.
• "Lol, no."
• Meanwhile, a group of religious MAGA Republicans (Trump is presumably dead at this point) form a religion devoted to worshiping the aliens, believing that they're angels sent by God.
• The aliens' predictions come to pass. The collapsed US is then taken over by the alien supporting religious organization in the late 2060s-2070s.

I'm sure you can find many with words analogous to voters, changing, perceptions, opinion polls, etc. I know I've seen dozens of examples of conservatives changing their opinions dramatically based on propaganda, while everyone else — the people not indoctrinated with a mental illness — stay relatively static; as in +/- 5% instead of 10-40%.

You will likely have to use advanced search and the internet archive. Also best to search key propaganda narratives like "migrant caravan".

Man, looking closely at this is comical. Conservatives are the most flock-minded people on Earth, whatever their taking heads say instantly becomes their new zeitgeist. The irony of conservatives calling everyone else sheep is... Well I guess there's a reason I so often hear the phrase "every conservative accusation is a confession".