The Big Lie (e.g. the birdemic, antiracism, CO2 global warming) is usually analysed in terms of its practical benefits - i.e. that lying is instrumental, that dishonesty assists the attainment of certain goals. But the Big Lie is primarily and ultimately spiritual - regardless of whether or not it is strategically helpful*.
It has become vital consciously to know the Big Lies as lies... And because the lies are conscious; so muct the knowledge of their falsehood be conscious.
(Instinctive resistance to lies, based on unconscious urges, is spiritually insufficient.)
A lie is a sin and a Big Lie is a fundamental sin by which a person (a civilization) may be overthrown and self-damned. Satan was called the father of Lies for this reason. The Big Lie is a temptation.
If we focus only on the practical (e.g. sociopolitical or psychological) effects of the Big Lies, we will neglect or forget the spiritual dimension - which is primary.
And if we are (in practice) unable to resist the material roll-out of the Lies, then we will be tempted to give-up on resistance altogether - to go-along-with the lie spiritually as well as practically - and that may well lead onto spiritual acquiescence to the lie.
But the reality is that Thoughts Have Power: spiritual power first, and thence practical power.
Thoughts indeed have ultimate power: Conscious knowledge of a Big Lie is a power against Satan, demons and supernatural purposive evil; and consequently power against what they plan to do.
(Totalitarianism aims to be total for exactly this reason. There must be No Dissent - because each dissenter wields a spiritual weapon.)
There is a limitation of evil, to do with its needing the consent of those whom evil intends to corrupt.
(This limitation has to do with the primacy of God and creation; and that evil is negative, hence secondary: Evil is opposition to already-existent Good.)
This limitation is symbolised in mythical terms by such phenomena as the assertion that a vampire must be invited to cross the threshold of a house; or that the super-villain must 'monologue' his plans to the superhero, before he can execute them... People need to be told what evil intends, before evil can do it.
The reality behind such myths is, of course, spiritual not verbal. The reality is that when evil is known as such and rejected, then it is ineffectual - it has no power to fulfil its wishes.
Victims must therefore (spiritually) agree to the evil done to them: victims of evil must become complicit with their spiritual corruption.
(Although, of course, victims may physically be corrupted despite spiritual resistance - since mortal life is about learning directed towards Heavenly eternal life - and experiences of this life happen for this reason. Yet even the physical and this-worldly practical evil is - to some extent, for reasons perhaps not known - repelled or thwarted by spiritual refusal; since the physical is secondary.)
In resisting the Big Lie we are often up-against established habit, and habit may lead us unthinkingly (un-consciously) to go-along-with the practical implementation of evil. Nonetheless, direct divine intervention will (sooner or later) alert us to the reality; and then each person will be brought to the point at which he must agree consciously to evil - or reject it.
(Consciously to 'delay' making that decision is In Fact to agree to evil, here and now, and to advance its corruption in oneself. Repentance has infinite power, but is binary. There is no neutrality about evil.)
And it is never too late to repent, therefore never too late to resist evil.
Better late than never is a true saying - when better has an ultimate and spiritual sense; and 'better' is true however the practicalities of this-world evil implementation work-out.
Any individual person that consciously knows evil - who knows the reality behind a Big Lie - is thereby weilding a real spiritual effect upon the power of evil: a power to resist evil - including a power against the practical implementation of evil strategy.
Which is why many, many bad things that might have happened - that were planned to happen - in fact have not happened!
*Note added: This is why the mass media always lie, even when They don't need to; in the major, headline news stories.