Is Revenge Ever Justified?

Is revenge ever justified? I think it depends. When revenge is justified, it should help others in the society. For example, when there is a criminal who is selling drugs, and then the heroes have made their revenge, then that means the revenge is justified. However, when the revenge is not justified, then it is just increasing the criminal rate in a country. Also, the revenge caries greatly depending on the perspective of the people involved. For example, if the target is a bad guy or criminal, then the revenge is justified. However, sometimes the revenge is not justified because you might have killed the wrong people. Sometimes, the concept "an eye for an eye" does and doesn't apply to this idea. When this concept applies to the justified revenge, then it is worth for people to make their revenge. When the concept doesn't applies to the justified revenge, then it means that the revenger revenge for their own profit or something like that.