As of a couple of years ago, the average job tenure of an employee working in a slaughterhouse was 6 months. Many people lasted half a day to three days. The emotional stress and trauma of witnessing living animals being put through the kind of things factory farming does to them is emotionally overwhelming to even the most hardened people.

The people who have to witness that day in and day out frequently end up with extreme emotional turmoil/psychological trauma similar to PTSD and it is these traumatized employees who end enacting much of the crueler practices talked about in these videos.

It's very challenging for a person to witness what goes on in a slaughterhouse and to maintain their sanity. Trying to keep the idea that these are living creatures with rights but also that it is perfectly fine for them to suffer the horrible treatment they are subjected to requires a tenuous mental gymnastics that apparently seems to break down after only a couple of months of exposure.