Oyasama (comparable to Jesus in the Christian Church) once said that sometimes we must not pursue to challenge people who we believe have wronged us. She emphasized that their anger and vice (dust) may attach upon us, and cause us to act like them. This is certainly obvious in our political environment where both parties are stretching the truth and fabricating lies and innuendos in going after people they believe are immoral or corrupt.
How do we seek justice for the crimes that we believe have occurred? Do we have a responsibility to stop and report it? Maybe. Is our justice system always right? Of course not; we know that some guilty people are exonerated, and some innocent people are incarcerated. Is there a universal justice, where all are actions are monitored, and justice rendered as joy or suffering. Like the classic Christmas song, Santa Claus is Coming to Town, where Santa is making a list, and checking it twice; finding out who is naughty or nice. Is God Santa Claus who makes sure that justice is delivered to everyone equally?
Or could we have something within us that is monitoring our behavior and thoughts, and eventually meting out justice. Some will call this the soul, heart, or spirit, which continues for eternity, unlike our physical bodies that decay. It is the soul that collects are merits and demerits, and eventually delivers joy or suffering back to us. Most of us unfortunately do not see immediate justice by the soul. This is why evil people believe that they can get away with their crime as long as no one sees it, or escapes quickly from the scene. From the perspective of the soul, these people are dead wrong; justice will prevail. We see good and evil in this world and we see joy and suffering in the world, but the lapse of time often obscures the cause and effect relationship. Just because one does not see flashing red lights or iron bars does not mean that justice has been avoided; time will eventually catch up with the evil person because of the soul.