By doing something to get it out of the way as soon as possible. By engineering rejection. The audience obviously lacks his intellectual courage and insight. He grasps truth and goodness. They are stupid, worthless and possibly evil.
Some libertarians flash to convince themselves that they are doing something for freedom.
They mistake flamboyance for effectiveness, heat for light. Still others flash to persuade themselves that nothing can be done for freedom. If people are shocked by libertarianism, then effort is futile. This is a beautiful example of a self-fulfilling prophecy. The Late, Great Libertarian Macho Flash has its defenders, of course.