纪录片《统治》（Dominion，2018）

Dominion is a two-hour documentary using drones and hidden cameras to expose conditions in animal agriculture, including food, clothing, entertainment and research. It questions humanity's dominion over animals.

Why HN likes it: HN commenters push it, often forcefully, as the video to watch to see what factory farming really involves, and some say it changed their diet.

“this documentary made me re-evaluate my diet.”