Social justice

The term "social justice" is easily the most confusing and misunderstood phrase used by many today.  What exactly does it mean,  how did it come into such common use?  Peter West, a Catholic father, talks about it in this article, and there are excellent comments following the article that shed real light on this highly misleading phrase.  Von Mises spends some time discussing the term in his book, "Human Action" and berates himself for not completely discrediting it over the years.  What one has in this term is the joining of two words that cannot be joined since they are mutually exclusive.  First social, a word that has several meanings but in essence is a word relating to  a group or collective assemblage. Justice is mostly a word with legal connotations meaning giving or getting what is one's due. So what does it mean to join these two words?  Not much.   As the term is used in public discourse these days, those who argue in the comments that what you get is a call for reparations, make a good point.