Four documentary giants gathered in Park City, Utah, for a celebration of documentary filmmaking during the Sundance Film Festival.
Alex Gibney ("Casino Jack and the United States of Money"), Davis Guggenheim ("Waiting for Superman"), Mark Lewis (Cane Toads: The Conquest 3D") and Lucy Walker ("Countdown to Zero") talked about making documentaries in the current social and economic climate.
"I think it is a golden era of documentary filmmaking, if not a gold rush," said Lucy Walker.
Davis Guggenheim added, "I think a lot of us start making documentaries because we want to change some injustice."
HuffPost Entertainment is your one-stop shop for celebrity news, hilarious late-night bits, industry and awards coverage and more — sent right to your inbox six days a week. Learn more