There's a new book out by Jane Mayer called dark quotes Money. Here is a quote from an interview with her, to go along with this info video.
"In about 1976, there was a plan laid by Charles Koch to build what he called a radical movement to change the way that America voted and thought. And he said we need to, quote-unquote, "destroy" the statist paradigm and start a movement. And he modeled it on the John Birch Society. He loved the secrecy of the John Birch Society. And there’s a ...paper that is quoted in here that he wrote in 1976 about how he was going to found a movement and launch it. So, this has been a long, long-running project. And he’s built it up. He’s an engineer. He’s extraordinarily wealthy. And he has worked with a number of very smart people to build this network that tries to sort of push, push, push the country in his direction."