When leftist politicos use the phrase “social justice”, it, of course, goes undefined, because like all Newspeak phrases and words (”health care” as used lately, “comprehensive immigration reform”, “racist”, and so forth), it means exactly what The Party wants it to mean at any given time.
What is more interesting is to analyse the phrase in the mouths of ostensibly Christian clerics. Here it seems to represent an abrogation of Christian responsibility, and a failure to heed the words of Christ, when He said, “the poor you have with you always.” The Christian responsibility to succor the poor, “in as much as ye did it to the least of these, ye did it unto Me,” to imitate the Good Samaritan who voluntarily used his own money to pay for the care of the man who fell among theives, gets twisted by clerics who buy into “social justice” into a responsibility to badger ‘Caesar’ into succoring the poor out of tax revenues, which ultimately is no responsibility at all.
Replacing philanthropy with “social justice” denies the donor the opportunity to imitate the Father, who makes the sun to shine and the rain to fall on the just and the unjust alike, and gives the recipient a sense of entitlement rather than gratitude. In the end “social justice” turns out to be a demonic simalcrum of Christ’s command to love one’s neighbor as one’s self, and like all such delusions only leads to harm, both spiritual and material.
The Good Samaritan voluntarily helped someone in need - once. He was not responsible for the mans health care forever. If he were, he'd be enslaved by the wounded man for life.