Who's behind the government shutdown?

Here’s Senator Bernie Sanders’ video interview on that question. And here is the New York Times investigative report answering it. What do the billionaires like the Koch Brothers and the Walton family want for their money? They have poured hundreds of millions of dollars into the planning of this shutdown, beginning their campaign just days after Obama won reelection. Do you think they are motivated by their concern for their fellow Americans or by personal greed?