Social Justice is Legal Justice

What Exactly Is Social Justice? by Carrie Gress
Pope Pius XI Defined the New Virtue, Focusing on the Common Good, in 1931

Social Justice Isn't What You Think It Is by Michael Novak and Paul Adams, Encounter Books

Parts of it may actually be good even though Novak is a liberal, i.e. a supporter of capitalism.

Michael Novak on Léon Bloy

Crisis: Léon Bloy’s Role in the Catholicism of Jacques and Raissa Maritain by Michael Novak

Correction from a NeoCath

Fr. Schall gives an approval of Michael Novak's latest on Catholic social teaching: Crisis: What “Social Justice” Really Means by Rev. James V. Schall, S.J.