In 2010, the Republican-leaning Texas Board of Education approved a new set of standards which either 1) re-corrected the balance of historical education away from the liberal bias it tends to or 2) created a new tool for teaching young children that Creationism and a Conservative agenda are correct. The trick here is that a small group of people define what they want to see in textbooks, and the textbook writers have to abide or risk not selling millions of books. Since Texas buys so many, it often (alongside California) informs what the rest of the nation will be learning.

At the heart of all of this, was a dentist.

The new documentary The Revisionaries – which played Tribeca last week – focuses on Dr. Don McLeroy, the dentist and Creationist in question who is seeking re-election to the board. McLeroy, who recently went on The Colbert Report to discuss his views, is frank about his opinion that Liberals have taken over colleges and that evolution should be questioned while Creationism is giving equal footing in science classrooms.

It’s an arrow that hits right into the heart of a cultural divide in America, and it’s one that ensures this doc has a deeply compelling subject. Check out the trailer for yourself: