There is a mental illness--There's an extreme, specific version of a personality disorder that revolves around violence, and this is known as " antisocial personality disorder." It is--it used to be called moral insanity.

有一种精神疾病——有一种极端的、特定的人格障碍，它与暴力有关，这被称为“反社会人格障碍”。它曾经被称为道德疯狂。