Most of the time, killing someone does make someone a bad person
Explanation: Killing someone is a crime, and you could get arrested for doing it. Even if the person you are killing commited a bad crime, instead of killing them, you should call the police and let them handle it. If you kill them yourself, then you could get arrested too. If the person did not commit a crime, it is better to talk about your feelings than start violence and try to kill them. Thus, killing someone would make someone a bad person
