If you've every watched "A Face in the Crowd" you'll understand. Some highlights from Wikepedia:
A Face in the Crowd (1957) is an epic motion picture starring Andy Griffith as Lonesome Rhodes.
The setting for the film is late 1950s America, a time during which television was rapidly replacing radio as the most popular entertainment medium. Although Rhodes is coarse and abusive, he possesses a colloquial, on-air charm that quickly endears him to the hearts and minds of rural listeners.
In the tradition of classical tragedy, Rhodes is undone by his thirst for power and by Jeffries who, despite building his stardom, becomes so fed up that she allows him to expose his contempt for his fans on the air.
As a "Cracker Barrel" broadcast ends, (Andy Griffith) Rhodes is shown, with sound off and an announcer doing a voiceover, smiling and waving to the camera as he speaks contemptuously of his audience. In the control room, Jeffries and the technical staff hear him continue to mock his viewers as "idiots," "morons," "guinea pigs." Fed up with Rhodes's betrayal, aware she helped create the monster, Jeffries pushes slide switches that throw Rhodes's comments on the air. In minutes, furious, betrayed fans who heard the remarks are calling the network. In a symbolic moment, an unaware Rhodes's popularity is shown plummeting as he rides an elevator down following the show.
http://en.wikipedia.org/wiki/A_Face_in_the_Crowd