The only justice is to follow the sincere intuition of the soul, angry or gentle. Anger is just, and pity is just, but judgement is never just.
It would be easy to define terrorism as attacks against human rights and international humanitarian law forbids attacks against innocent non-combatants which is often the definition used for terrorism.
You do not know our culture, our ethics, or the unwritten codes that already provide our society more order than could be obtained by any of your impositions.