Carl Deal and Tia Lessin, co-producers of Fahrenheit 9/11 and Bowling for Columbine, are documentary filmmakers. They say their galvanizing moment came after trying to visit a fundraising retreat in Palm Springs, California, in 2011 hosted by the Koch brothers.

CEOs, Supreme Court justices, pundits and politicians were all on the guest list. The Koch brothers were putting together a network of conservative billionaires.