Juvencio says that he had to kill Don Lupe because “he had refused to let him pasture his animals," in spite of him being Juvencio’s friend and the owner of Puerta de Piedra. There had been a great famine and Juvencio hadn’t really understood how Don Lupe could claim to be his friend, yet refuse to allow him to graze his animals on his pastures, even as the animals died in their numbers. Driven to the wall, Juvencio had broken through the fence of Puerta de Piedra to allow his poor animals to graze his friend’s lands in the dead of the night. After repeatedly breaking into his friend’s farms, his friend retaliated by killing one of his animals. It is at this point that he killed his friend.
