In Jainism, killing any living being is wrong, even if the person is considered “bad.” Jain dharma teaches ahimsa as the highest principle.

Key Jain thoughts:

• Do not harm or kill anyone.
• Hatred does not remove hatred; nonviolence and self-control do.
• A person who does wrong should be dealt with through truth, restraint, forgiveness, and lawful protection, not violence.
• Jainism emphasizes changing the soul through repentance, discipline, and karma purification, not through revenge.

So, from Jain view:

• Killing a bad person is also himsa.
• The right path is to protect life, avoid violence, and oppose wrongdoing without hatred.

If you want, I can also explain this according to Jain sutras and examples from Jain teachings.