The above picture I came across some time ago. This appeals to me for a number of reasons. These males are on a rural location, possibly a farm. They are certainly livestock not because they are naked: slaves are livestock and have no right to clothes anyway. But because these are being loaded on a real animal transporter vehicle. This must be a sheep or pig transporter due to the two levels inside.
The livestock are being herded inside on all fours indicating they are animals. It would be interesting where they were delivered to.
I should imagine the livestock once delivered to their location, are herded off and put into their pens. This is just the place to keep animals. These males are naked which is quite right: they will not sleep here, as these pens are just holding pens. A much bigger pen is needed to allow the animals room to move and circulate. Animals like these eat from a trough, sleep in the pen on straw. Just like animals, they will find a place to urinate, they will find a place to defecate. Just like animals, their pen will be mucked out by a farm worker. Just like animals I am sure they will be branded and marked in some manner, perhaps even have tags inserted into their ears.
It is only natural for livestock to roam in the fields. The animal needs to feel the grass it walks on, it needs to feel the fresh air on its flesh.
This male animal is allowed to be upright however it is secure with its collar and chain, and of course its hands are bound. Could be going for an exercise before returning to its pen.