God loves justice, and he longs to see a world where there is justice for all. Where the rich and powerful do not exploit the poor and powerless. Where the vulnerable, widows, orphans, disabled and mentally challenged receive fair treatment from the rest of humanity.
Of course, God could force us to be just to everybody. But if God forces to act in a particular way he would have to remove our free will; our ability to choose between good and evil, our ability to act for the common good rather than seeking our own selfish aims.
God loves justice, but because we have free wills, he chooses to use the likes of you and me. Through us he continues to create a world where justice rules in the affairs of men.
Compassion and Justice 