What Is Distributive Justice?

Ralls's answer to this question is that it's largely been a misplacement of priorities. We claim to be creating societies that are just, ones that won't lead to outcomes like these extreme tensions between groups. But what exactly do we mean when we say society should be ensuring justice? This is not just an important question to ralls. He has a very famous quote where he says, justice is the first virtue of social institutions as truth is systems of thoughtan and so on.