I hear something similar happens in places called "abattoirs."
Abattoirs? Good one Snoopy, made me look it up. Carnages de Boucheries, eh?
The mere act of being human seems to be inhumane at times. Vegetables still have feelings, still communicate, still are alive. Vegetarians are not immune to the carnage humans inflict upon the life around us, killing to live is still killing to live. The distinction in my opinion is in taking the life only of that you require to sustain your life, and no more, and being grateful for the life given.
Of course, even that can get fuzzy around the edges. What do we do with the rats that threaten our food stores, or the other vermin like roaches and flies that threaten the health of our children? What about the rattlesnake that surprises us in the garden? What do we do with the rabid raccoon or dog wandering the neighborhood?
Do we read the daily newspaper, or wipe our fannies with toilet tissue? Some tree somewhere died to provide those conveniences, and the processing plants are every bit as vulger and repulsive as any slaughterhouse, and even more polluting. Seems to me an attitude of callous smugness that settles over some because they eat creatures that have no eyes nor utter sounds that can be heard by human ears, that they are in some manner ethically superior to those who eat animal flesh, is quite misguided. Life sustains life, life feeds life. Life cannot survive eating anything that was not first alive, and life is life, death is death.
Killing unnecessarily, for sport, for simple convenience, is just plain wrong. But not having seen this video, I can reserve my harsh judgement because I do not know the context (and I do know very well how Hollywood exaggerates, and people are prone to emotionalism and sensationalism).