Are all murderers bad people?
You’re right. Not all of them are. Some people kill for revenge. Imagine that some serial killer killed your whole family, your parents, children, siblings, etc. If it would be me, I wouldn’t stand it, I surely wouldn’t wait for police to catch him and put him in jail, because I believe this kind of evil people should just die slowly and painfully. And this is what sometimes happens, once in a while you can hear about people who kill for revenge. It’s pretty common in countries were family bonds are really strong, and especially since it’s really hard for parents to forgive someone who killed their child. However, people who kill “accidentally” because they were really angry don’t count as innocent, because it was their own fault for not controlling their emotions. And people who kill as “self-defense” should not even be called murderers, because they’re not.