I really think you are just playing semantics here. The quote wouldn't be nearly as effective if it read:
"Be peaceful, be courteous, obey the law, respect everyone; but if someone puts his hand on you, hurt him just enough so that he leaves you alone - but don't kill him."
"Be peaceful, be courteous, obey the law, respect everyone; but if someone puts his hand on you, hurt him just enough so that he leaves you alone - but don't kill him."