The big lie was something they all knew about. How it was put together and why.
The way the big lie started off followed a reliable formula, little lies bundled up together, which to the casual observer were unconnected. On reflection, they conjured up strands of a hidden truth.
The big lie was cobbled together in darkness. It played on resentments and provided a readymade enemy.
People had been hearing those big lies forever. They never went out of style. Doubts were as easy to stir up as a martini.
That was the thing. All you had to do was aim it at what people wanted to believe.
You just gave them a way to believe they were superior, immune to the brainwashing that swept up the rest of the country.