You can’t reason someone out of a position that they didn’t reason themselves into.
Fascists and other Frauds tell the Little Man that he is a loser; that he is being ripped off by the Bad People; that his whole class or gender or race are being taken advantage of by their inferiors. They play to the Little Man’s anxieties, making him feel littler and more stepped-upon.
This is all a lead-in to telling the Little Man to sign up for the Big Lie.