If this needs to be explained to people, we have already lost.
(Raise your hand if you put a child in public school.)
The very idea of trying to explain anything to them is absurd.
The problem in our country isn't that the Republic is gone (though it certainly is). The problem is that a massive percentage of our population has literally gone insane.
We can all speculate about how this was accomplished or by whom, but that is beside the point.
The point is, can people so insane (literally insane) be cured? Is there a remedy for this condition?
As an aside, I remember when people used to speak of the "falling away" (2 Thessalonians 2:3) as some great apostasy or a falling away from the churches and the faith.
People never thought that the "falling away" might be a departure en masse from the very God-created/designed reality of life on Earth. No one suggested that the great "falling away" might mean that people would depart from their existence as human beings and become zombie-like creatures.
The only difference between the people on the Left in this country and the Walking Dead is that the mind-dead Lefties aren't losing limbs and eating human flesh. But that might be coming soon (they are already losing genitalia).