I watched, "Black Fish", a documentary about the killer whale entertainment industry - not pretty.
Also, "12 Years A Slave", which was fascinating, and horribly chilling, from a perspective of how human beings can rationalize treating other humans, as property. To see it in action was mesmerizing, as my mind and heart could not conceive of this ever actually being a reality, and yet, there it was, on a massive scale. It reminded me a lot, of accounts I have read of the Nazi mentality, rationalizing the treatment of human beings, basically as replaceable resources, and North Korea, where a sideways look can mean a bullet in the head, randomly. A friend refers to these types of movies, as ones to watch, not for enjoyment, but simply because we have to.