The documentary, "Meat" (1976) by Frederick Wiseman was done for PBS television and is a straightforward look at a slaughterhouse.
It is available on DVD from the zipporah films website.
I didn't need a film, having spent time on a dairy farm which doubled as a meat producer.
I remember afternoons in the country on the farm eating par-boiled prime beef, or trying to, at the dinner table while cattle roamed the pastures outside, and even when you did not look, you could still hear them.
I have a question. Let's say that you learn that your family works in Hollywood and they never told you, always pretending to work "common jobs" but dropping hints along the way. Now, let's say they borrowed ideas and materials from you without your knowledge or consent and that, as far as you know, you have no connections to the industry.
Okay, now let's say that they choose to haze you due to their 'borrowing' and that the object is to get you to work in their exclusive Closed Shop while maintaining a low profile in order to protect their privacy, but in hazing you, they first run you ragged and then let their powers of influence be known. At this time you are a wreck and cannot work, so you have no money. You live with them. And they make a point of forcing you to share their food, all of this unusual behavior due to their low profile lifestyle given their status in the industry and the money which they by all Rights owe you, and of course they insist that you eat meat.
But when you confront them about their true occupations, they deny it (The Silence), and when you offer to join in, they deny it, and when you assert your rightful self, they become violent. And when you respond to their abuses with necessary force, or a normal understandable response to their rough treatments, they have you arrested instead.
And then the cops and members of the local government are in their pockets given that this is Hollywood.
What would you make of them? Would you want to work in the entertainment industry given the treatment and what about the forced eating of meat, or starve, because they broke you and they owe you, but you are not a member of their group officially sworn to secrecy like a Skull and Bones fraternity?