I had a friend whose brother was a prison guard. He had some stories but the only one I remember was a time when there was a prisoner in solitary for awhile who had become very attached to a praying mantis that had somehow made its way into his cell. The mantis lived with him for quite some time and he loved it like it was his friend. One day a prison guard who wasn’t aware of the mantis being important to this prisoner stepped into the cell, saw the mantis, and promptly slammed his hand down on it to kill it.
The prisoner was, understandably, devastated.