I am not very educated on the justice system, but I am familiar with how karma works.
In my opinion people who are guilty a lot on various things try to dodge karma. This usually involves large lies and blaming someone who is innocent. It seems that karma does come around and visit eventually. We all have a conscious even if it is small. Injustice can cause people to feel bitter and taken advantage of. It seems small maybe, but for the person experiencing an injustice it may feel like an intensly awful thing. So I think justice can be restored for the good of anyone involved in a problem, but people need to learn how to advocate for themselves as well. I don't see ethics being taught at our schools. It should because then students could think about ethical situations and really have to think about something that they can apply to their real life. Those situations tend to be exciting and stimulating. Perfect for students and non students.