The Left implemented a novel technique of the Big Lie that I will call a Flooding Fake here. This technique was especially widely used by climate alarmism. This is what it looks like:
An important figure or organization on the Left is caught doing something wrong, saying something outrageous, or blatantly lying.
The Left injects into public discourse an absolutely fake, but believable, account of this action and immediately “debunks” this account.
The fake narrative is accepted by the public as truth because the public knows that something similar has happened. The immediate debunking is rejected as a cover-up attempt.
Later, when people accuse the original wrongdoer they use elements of the fake narrative. This is when “fact checkers” jump on them. Fake news networks accuse honest statesmen and commentators of spreading fake news. The liberals’ conviction that the conservatives are stupid and uninformed gets deeper. Google buries honest pieces far from public sight. Facebook tries to prevent their sharing. Leftist politicians cry that they lost elections because of fake news.
An example is a global cooling scare of the 70s.
Orwell's MiniTru could not be reached for comment. Highly recommended.