What does the concept of "Justice" mean to you?

No, Justice has no real meaning.

People confuse it with "revenge" or "vengeance".

True justice would be to inflict vengeance on a perpetrator  to the ssame extent that he or she inflicted injury on those they harmed.

For that to happen, Hitler would have to die at least 6 million times and in the same way that each of the people he ordered killed, died.

Impossible!

Also, having done that, has Hitler now atoned for the sins of Goering, Himmler and all other nazi stooges, in the same way that Christ is supposed to have redeemed all of us?

We can only seek revenge on these people and it will always be a limited revenge.

But it is a better and more honest answer than is the idea of justice!

Well, an interesting question.

To me, justice is merely a word.

It has no real meaning.

It is an idea foisted upon us by those in power as a means of controlling us.

It says that they are going to deal with things and we should leave it all to them.

For example;

World War 2.

6 million Jews were slaughtered along with many million others.

Was it "justice for those 6 million Jews when a few hundred nazis were hanged or imprisoned?

IN NO WAY!

It is just a courtroom declaring to its government that it has "dotted the "I's" and crossed the "T's".

Nothing more than that.