Sword to Cut Off the Injustices in the World

Demons are evil, and so are humans. If humans do evil things to demons, is it not evil? When people do good things, demons also do good things. If demons do good things to people, does it become hypocrisy? Killing demons is for the sake of killing demons, but many people die when killing demons. When the sword comes out, it distinguishes between pure and turbid, whether it is good or evil. "Come to Yuewen's website to read more of my works!"