They are no like human beings and they cannot be treated like they are. They understand one thing and that is more brutality than they can give out.

Jesus Helguera “This is good, Abuelita.” She took a long drink from her canteen and handed it to Alice who drank deeply. “You must understand these people, these excremento we are after. They are no like human beings and they cannot be treated like they are. They understand one thing and that is more brutality than they can give out. Do you understand?”
“I do, Maria. I do.” Alice wiped her forehead and replaced her sombrero. “Have you known much of this, Maria?”
Chica stiffened. She would not share with anyone, not Arvel, not the old priest she’d known, not Abuelita, what she had known. Her past was her own and she shared it with no one.
She snapped, “That does not matter.” The Mule Tamer II, Chica's Ride