It is a common ploy of propagandists to lump such lofty ideals as peace, freedom and justice in a single pile and consider them the same thing. This foolish behavior has resulted in far to many people believing that freedom or peace is justice.
In this context we speak not only freedom from oppression by others, but further the freedom from being held responsible for the consequences of ones actions and inactions. And we speak of peace not devoid of oppression, but simply without obvious local warfare. This unthinking prejudice has rendered large subsets of the world population unwilling to accept the necessity of taking on the very significant responsibilities implicit in living in a just society out of the foolish notion that somehow responsibility is unjust.
It becomes then necessary to pick freedom, as the all encompassing freedom from responsibility which is the ostensible goal of political reform in the "first world". Or to pick peace, without consideration for the circumstances or the oppression needed to bring it about. Or on the contrary to pick justice, which of necessity requires limiting peoples freedom to act in unjust and oppressive ways, and requires at times that we fight for what is right instead of letting it go so that we can "all just get along".
Justice entails as much freedom as can be achieved without impinging upon the freedom and justice of others. In comparison to theoretical infinite freedom this is distinctly finite, but contains within its limits the acknowledgment of the reality that ultimate freedom is impossible. Unlimited freedom requires the lack of freedom of others, this freedom is in fact simply oppression dressed up in fancy clothes
Similarly peace without justice is a breading ground for war, the second world war is a clear indication of this principle. The unjust peace created at Versailles created an environment which allowed the coming to power of a regime which is now synonymous with evil.