As usual, I'm afraid,  you engage in selective reading.  THIS article is certainly about social justice.  There have been many others as well.  If people are concerned and are discussing an issue, it behooves the "official" church to look at the issue---and to remember that Catholic social teachings cannot be kept in a vacuum.  If the old teachings no longer apply---they must change.  Social teachings refer to society and must encompass a society that is truly JUST, RESPECTFUL of ALL, and seeking PEACE within our society for ALL.