Are you an utilitarian?

1. All acts that maximize good consequences are right.
2. Some punishing of the innocent maximize good consequences.
So
3.Some punishing of the innocent is right.

Versus

1. No punishing of the innocent is right.
2. Some punishing of the innocent maximizes good consequences.
So
3. Some acts that maximize good consequences aren't right.

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The first argument justifies all wars and, the second, justifies peace under Hittler's, Maos, Stalins.
You choose because both are valid arguments. Their solidity will depend on our understanding of right and wrong, and on the value of a human life. Logic will not help you! What will help you?
That is something to discuss later.