Social Justice, also known as economic justice, is a term describing the redistribution of wealth for the common good of all. However, this comes at the expense of wage earners and liberty by demanding a society to conform. Those who work and have must give to those who don't work and don't have. This is the fundamental basis of Marxism and championed by liberal progressives. Everyone shall have equal advantages and everyone will have equal disadvantages. In reality it creates two classes, those with power and everyone else.
Many Christian organizations strongly support social justice. However, this is a trap promoted by liberal Christianity claiming Jesus was a socialist. We are to help the less fortunate but we are not to become the less fortunate in the process. The National Council of Churches, the group that translates the Bible to the New Revised Standard Version, is an advocate of Social Justice. 
The Roman Catholic Church and Social Justice
The Roman Catholic Church advocates social justice that is based on charity and support for all mankind, its key points being respect for the human person, equality and difference among men, human solidarity. In brief, they seek respect, equal dignity, encourage charity, reduce excessive social and economic inequalities, the elimination of sinful inequalities, and the sharing of spiritual goods. 
The teaching is based on Jesus's teaching in the Gospel of Matthew (Mt 25:34-46):
|“||Then shall the King say unto them on his right hand, Come, ye blessed of my Father, inherit the kingdom prepared for you from the foundation of the world: For I was an hungred, and ye gave me meat: I was thirsty, and ye gave me drink: I was a stranger, and ye took me in: Naked, and ye clothed me: I was sick, and ye visited me: I was in prison, and ye came unto me. Then shall the righteous answer him, saying, Lord, when saw we thee an hungred, and fed thee? or thirsty, and gave thee drink? When saw we thee a stranger, and took thee in? or naked, and clothed thee? Or when saw we thee sick, or in prison, and came unto thee? And the King shall answer and say unto them, Verily I say unto you, Inasmuch as ye have done it unto one of the least of these my brethren, ye have done it unto me. Then shall he say also unto them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels: For I was an hungred, and ye gave me no meat: I was thirsty, and ye gave me no drink: I was a stranger, and ye took me not in: naked, and ye clothed me not: sick, and in prison, and ye visited me not. Then shall they also answer him, saying, Lord, when saw we thee an hungred, or athirst, or a stranger, or naked, or sick, or in prison, and did not minister unto thee? Then shall he answer them, saying, Verily I say unto you, Inasmuch as ye did it not to one of the least of these, ye did it not to me. And these shall go away into everlasting punishment: but the righteous into life eternal.||”|
The Church's support of the teaching began largely with Rerum Novarum, an encyclical letter written by Pope Leo XIII, published in 1891. The 1962 - 1965 Second Vatican Council produced an Apostolic Constitution called Gaudium et Spes which stated in Paragraph 90:
"The council, considering the immensity of the hardships which still afflict the greater part of mankind today, regards it as most opportune that an organism of the universal Church be set up in order that both the justice and love of Christ toward the poor might be developed everywhere. The role of such an organism would be to stimulate the Catholic community to promote progress in needy regions and international social justice."
Based on the above statement, in 1967 Pope Paul VI created a Pontifical Commission called Justice and Peace, later re-named by Pope John Paul II The Pontifical Council for Justice and Peace.
- Glenn Beck Keeps 'Social Justice' Debate Alive Christian Post, March 20, 2010
- Vatican- Social Justice
- Obamacare: A Social Justice Nightmare for the Whole World
- Glenn Beck Keeps 'Social Justice' Debate Alive
- NETWORK - A National Catholic Social Justice Lobby (advocate of Obamacare & Abortion)
- Vatican page of Social Justice