I found a flat earth reference in the propaganda documentary Before the flood. Also the UN logo is to see many times in this documentary. The first thing the documentary starts with an image of an owl. In this video there is mentioned how the earth looked like on the third day of creation. When this is being said, a model of a flat earth is shown enclosed in glass.
About Before the Flood:
Before the Flood, directed by Fisher Stevens, captures a three-year personal journey alongside Academy Award-winning actor and U.N. ”Messenger of Peace” Leonardo DiCaprio as he interviews individuals from every facet of society in both developing and developed nations who provide unique, impassioned and pragmatic views on what must be done today and in the future to prevent catastrophic disruption of life on our planet.
Watch the video showing this flat earth reference: