It is very hard to maintain social order without some concept of justice. Justice is bound to norms, and norms are enforced through what we call justice. It is a maintainer of norms, particularly in terms of dealing with what we consider violations of vital norms, i.e. mores. In other words, our norms outline how justice is to be served, and what is just, and then the service of justice keeps people in line with those norms.
If there were no norms, it would be a state of chaos that no society could exist in. Even selfish totalitarians want their people to have a sense of justice (the skilled ones will define justice themselves as much as possible). It's much easier to manage than a group of people with no values.