Does JUSTICE exist?

I believe that justice always comes, but in what form? First do we know what justice is? What defines justice?

Wikipedia says: Justice is a concept of moral rightness based on ethics, rationality, law, natural law, religion, equity or fairness, as well as the administration of the law, taking into account the 

inalienable and inborn rights of all human beings and citizens, the right of all people and individuals to equal protection before the law of their civil rights, without discrimination on the basis of race, gender, sexual orientation, gender identity, national origin, color, ethnicity, religion, disability, age, or other characteristics, and is further regarded as being inclusive of social justice.

     Do most people think that justice is just punishment for someone that does something wrong? I believe that everything you do in life has consequences, good or bad. Can you get justice for good things? While imperfect, justice is crucial to functioning societies. In the United States, our justice system may be the best in the world, the structure itself great. I feel where the problem comes in is, the human participants the flaws, politics and corruption of some of the participants is what causes the frustration that most have with the system and where they lose faith in it.

I welcome any and all comments.