Dennis Prager admitted that he has been wrong his whole life - the Left's moral compass isn't broken; it never had one. Prager made the mistake that most Americans make, namely that there really is such a thing as right and wrong. Americans have long seen the world from a Judeo-Christian viewpoint, whether or not they are believers in a formal faith. From Karl Marx on the Left, though, has never thought in these terms.
Instead of seeing the world through the lens of objective right and wrong, the Left sees it through the eyes of class warfare and expressly rejects any external and objective standard of right and wrong. Prager quotes Lenin at a Soviet Party Congress:
"We say that our morality is entirely subordinated to the interests of the class struggle of the proletariat. ... We do not believe in an eternal morality. ... We repudiate all morality derived from non-human (i.e., God) and non-class concepts" (Address to the Third Congress of the Russian Young Communist League, Oct. 2, 1920)."
The only relevant question for a Marxist is whether a statement or action advances (as they see it) or sets back the class struggle. Thus, lying, destroying opponents, or even murder can be justified as "right" if it advances the class struggle.
What is confusing to many is that the modern Left no longer speaks in terms of the old-fashioned "proletariat" of the USSR, but has added many other categories to the protected class, i.e. - race, women, immigrants, and basically any people group weaker than an opponent. Anything and everything from the New Left's standpoint that is said or done that advances the interests of a protected group in this class is therefore permissible.
What are some examples of this in the real world? Well, U.S. bad/Communist and socialist countries (by definition) good, white bad/everyone else good, Males bad/females and the gender du jour good, Israel bad/Palestinians good, police bad/rioters good. If you are classified on the "bad" side, then any lie or action that they can get away with is justified. Do you see how it works?
It is futile to think that any Leftist will ever admit they are wrong in any objective. This is the source of the Great Divide that we see in this country today and indeed in much of the world and the reason that it won't go away. It is a fundamental difference in how the world is seen: one is grounded ultimately in God and in the other, in power and as vested in whoever is ruthless enough to rise to the top of the heap. We should be prepared to respond accordingly over the long haul.
https://townhall.com/columnists/dennisprager/2020/09/15/the-lefts-moral-compass-isnt-broken-n2576225