This is true of nations as well as of individuals. After the Second World War, Germany offered substantial compensation to the new state of Israel for the holocaust perpetrated by the previous regime. To refuse to take revenge is not to cease looking for justice. Revenge is punishment to even the score. Justice is seeking not to even a score but to restore the necessary order for peace to flourish.
Revenge is done with hatred in the heart.
Justice is sought with love, not anger. It is as concerned with protecting the dignity of the offender as it is with restoring the rights of the offended. This is certainly not the way to peace since it is violates the search for justice which is one of the essential qualities of true peace. We only have to look at the great pacifists like Mahatma Ghandi and Martin Luther King, Jr., to see than non-violence is not passivity in the face of injustice. In order to understand the gospel text, we must understand the culture and social circumstances of the time of Jesus.