The concept of Justice both in Tarot (XI) and in society more widely is often misunderstood. When people think of Justice they tend to think of right and wrong, or virtue and vice, they tend to perceive Justice as being inherently good and Injustice as inherently evil but this isn't necessarily the case and the reason for that is complex.
Justice is not a question of morality; that is a statement which might anger you or make you feel perturbed to read, it might be something you immediately begin to formulate arguments against but in order to survive in the modern world you need to understand this concept in its entirety. I do single out the modern world here because in this age of information where we have access to news and updates from around the world, we are more aware today of injustices being committed than we have ever been. I see the news reports, I see the comments on social media, I hear the message people express so I know the argument you'll already be forming against my statement but my response is that your argument is misplaced.