VDH nails it:

victorhanson.com - The lies we have lived through

Any who questioned the vigorous Biden narrative was trashed as “ageist.” Special counsel Robert Hur was dubbed a “hack” for accurately describing Biden as so amnesiac he would win nullification acquittal from a sympathetic jury.

An array of court sycophants periodically gave interviews, insisting that the robust Biden was smarter and wiser than ever. His press secretary, Karin Jean-Pierre, helped coin a new slur, “cheap fake,” for any who collated video and audio clips demonstrating that Biden was obviously non compos mentis.

But this was just the latest in a series of grand lies meant to cover up the fact that Biden has been compromised mentally for literally the entire time as Presidency.

We were told dozens of lies and gaslit in many, many ways:
The Biden lie was the crown jewel of a number of other left-wing/media fabrications. The more they spread, the more they seemed absurd, and the more they were refuted—so all the more others took their place and the more their promulgators never apologized but simply moved on to their next one. The common denominator was that all the lies, during their existence, were useful to the progressive project.

And what lies?
-The Russian collusion hoax
-The Laptop from Hell was really disinformation (recall that Biden was able to use the "51 intelligence authorities" in a 2020 debate to lie to the public about the laptop's authenticity). In fact, Anthony Blinken was the guy that cooked up the entire "laptop was disinformation" thing
-The border is secure.
-"Republicans won't help us secure the border" and "Republicans want to defund the police"
-Jan 6. was a full-fledged coup meant to destroy the US government, but all the 2020 nationwide riots that caused billions of dollars and dozens of deaths were merely "cries from the heart"

Note that all these lies were never retracted. No one ever apologizes. No one is ever punished, even when the lie is given under oath. No one ever has any regrets. And no one ever has any hesitation to lie again, given the utility of the prior untruth.

VDH goes on to point out that unless the left's professional liars and charlatans are brought to account, we're going to keep living this over and over.