The 4th Petal of the Corolla.
The king asks if truth is worth anything if it is harmful. Apriori strongly answers that truth is only good if it is helpful and does no harm. A lot of ideas are covered here.
Oversimplification of this tough topic means that we are guided by wisdom to act with compassion. Any encounter is a teaching moment for both the aggressor and the the target of his or her aggression. We all can not escape harm if it is directed toward is with premeditation. We can protect ourselves with mindful practice and by also protecting others with truth and without harmful speech.