Watch: Celebrate Earth Day With Powerful Trailer For Climate Change Documentary 'Time To Choose'

Documentary filmmaker Charles Ferguson? shows no fear when it comes to tackling controversial subject matter, with the director taking on the Iraq war with "No End In Sight" in 2007 and the economic crash with 2010's Oscar winning "Inside Job." Both are in depth, incendiary works, and showcased a real no-nonsense finesse for the craft of non-fiction feature filmmaking.

Next on Ferguson's plate was an ultimately abandoned CNN documentary about current presidential candidate Hillary Clinton. It seems like the Clintons had no interest in seeing the wholesome, well managed image they have built over the years touched up upon by Ferguson. The director later told Huffington Post, "...nobody, and I mean nobody, was interested in helping me make this film. Not Democrats, not Republicans – and certainly nobody who works with the Clintons, wants access to the Clintons or dreams of a position in a Hillary Clinton administration." Given the...