Pedophile is different. Ask anyone in education...
Communist in the 1950s was bad and obviously for some was a barrier to re-entry but being called a Pedo in the age of the internet is a death knell. It doesn't matter if they ever even pretend to show proof, that accusation follows you and kills you.
Being accused of being racist or Anti-Semitic is bad, but you can come back from that. You get called a Pedo and you might as well go off the grid because your name will be synonymous with diddling little boys and girls even after you die. Nothing else matters...even famous people can't come back from it. Christ pedophilia is destroying fucking Prince Andrew...
But eventually even middling people will tweak to the fact that their blind emotional response is being weaponized, and
that's what is evergreen. Yes, the dumbest will always fall for it, but they also play the lottery -- they don't matter. What
has mattered in the lifecycle of each moral panic is that at first even normal people either (1) cannot engage their brain because they are so angry, and/or (2) will go along with the witch burning for fear of being accused themselves.
"Communist" carried every bit of that blind hatred and terror in its day, as did all the various infidel flavors in theirs. If your immortal soul is threatened, well, what else could
possibly matter?
Eventually, they go to the wall so often the accusation loses its presumption of guilt. People (again, above the median) realize that while there
is a real phenomenon, the accusation is statistically more likely to be slander to gain political advantage. And then we settle down and evaluate accusations rationally, which means the tool no longer works for the liars. They in turn move on the next target: the insidious menace of leprechauns.