Title: Social justice warrior
Content:  Dating back to 1824, the term social justice refers to justice on a societal level. From the early 1990s to the early 2000s, social-justice warrior was used as a neutral or complimentary phrase, as when a 1991 Montreal Gazette article describes union activist Michel Chartrand as a "Quebec nationalist and social-justice warrior". Katherine Martin, the head of U.S. dictionaries at Oxford University Press, said in 2015 that "[a]ll of the examples I've seen until quite recently are lionizing the person". , the Oxford English Dictionary had not done a full search for the earliest usage. Merriam-Webster dates the earliest use of the term to 1945.
Title: Social justice
Content:  of 1848 the term was popularized generically through the writings of Antonio Rosmini-Serbati. In the late industrial revolution, progressive American legal scholars began to use the term more, particularly Louis Brandeis and Roscoe Pound. From the early 20th century it was also embedded in international law and institutions; the preamble to establish the International Labour Organization recalled that "universal and lasting peace can be established only if it is based upon social justice." In the later 20th century, social justice was made central to the philosophy of the social contract, primarily by John Rawls in A Theory of Justice (1971). In 1993, the Vienna Declaration and Programme of Action treats social justice as a purpose of human rights education.
Title: Social justice
Content:  justice or the redress of injustices from a social perspective. The concept first surfaced in Western thought and political language in the wake of the industrial revolution and the parallel development of the socialist doctrine. It emerged as an expression of protest against what was perceived as the capitalist exploitation of labor and as a focal point for the development of measures to improve the human condition. It was born as a revolutionary slogan embodying the ideals of progress and fraternity. Following the revolutions that shook Europe in the mid-1800s, social justice became a rallying cry for progressive thinkers and political activists.... By the mid-twentieth century, the concept of 
Title: Social justice
Content:  Aquinas, the term “social justice” finds its earliest uses in the late 18th century—albeit with unclear theoretical or practical meanings. Thus the use of the term was early on subject to accusations of redundancy—are not all claims of justice “social”? – and of rhetorical flourish, perhaps, but not necessarily, related to amplifying one view of distributive justice. In the coining and definition of the term in the natural law social scientific treatise of Luigi Taparelli, SJ, in the early 1840s, Taparelli established the natural law principle that corresponded to the evangelical principle of brotherly love—i.e. social justice reflects the duty one has to one’s other self in the interdependent abstract unity of the human person in society. After the 
Title: Social justice
Content:  in The Rights of Man (1792) society should give "genius a fair and universal chance" and so "the construction of government ought to be such as to bring forward... all that extent of capacity which never fails to appear in revolutions." Although there is no certainty about the first use of the term "social justice", early sources can be found in Europe in the 18th century. Some references to the use of the expression are in articles of journals aligned with the spirit of the Enlightenment, in which social justice is described as an obligation of the monarch; also the term is present in 
Title: Social justice
Content:  written by Catholic Italian theologians, notably members of the Society of Jesus. Thus, according to this sources and the context, social justice was another term for "the justice of society", the justice that rules the relations among individuals in society, without any mention to socio-economic equity or human dignity. The usage of the term started to become more frequent by Catholic thinkers from the 1840s, beginning with the Jesuit Luigi Taparelli in Civiltà Cattolica, and based on the work of St. Thomas Aquinas. Taparelli argued that rival capitalist and socialist theories, based on subjective Cartesian thinking, undermined the unity of society present in Thomistic 
Title: Christian views on poverty and wealth
Content:  Social justice generally refers to the idea of creating a society or institution that is based on the principles of equality and solidarity, that understands and values human rights, and that recognizes the dignity of every human being. The term and modern concept of "social justice" was coined by the Jesuit Luigi Taparelli in 1840 based on the teachings of St. Thomas Aquinas and given further exposure in 1848 by Antonio Rosmini-Serbati. The idea was elaborated by the moral theologian John A. Ryan, who initiated the concept of a living wage. Father Coughlin also used the term in his publications in the 1930s and 
Title: Social justice
Content:  Pound and Louis Brandeis. One of the prime concerns was the Lochner era decisions of the US Supreme Court to strike down legislation passed by state governments and the Federal government for social and economic improvement, such as the eight-hour day or the right to join a trade union. After the First World War, the founding document of the International Labour Organization took up the same terminology in its preamble, stating that "peace can be established only if it is based on social justice". From this point, the discussion of social justice entered into mainstream legal and academic discourse. In 1931, the Pope Pius 
Title: Social justice
Content:  The United Nations calls social justice "an underlying principle for peaceful and prosperous coexistence within and among nations. The United Nations' 2006 document Social Justice in an Open World: The Role of the United Nations, states that "Social justice may be broadly understood as the fair and compassionate distribution of the fruits of economic growth..." The term "social justice" was seen by the U.N. "as a substitute for the protection of human rights [and] first appeared in United Nations texts during the second half of the 1960s. At the initiative of the Soviet Union, and with the support of developing countries, the term was used in the Declaration on 
Title: Justice
Content:  Social justice encompasses the just relationship between individuals and their society, often considering how privileges, opportunities, and wealth ought to be distributed among individuals. Social justice is also associated with social mobility, especially the ease with which individuals and families may move between social strata. Social justice is distinct from cosmopolitanism, which is the idea that all people belong to a single global community with a shared morality. Social justice is also distinct from egalitarianism, which is the idea that all people are equal in terms of status, value, or rights, as social justice theories do not all require equality. For example, sociologist George C. Homans suggested that the root of the concept of justice is that each person should receive rewards that are proportional to their contributions. Economist Friedrich Hayek said that the concept of social justice was meaningless, saying that justice is a result of individual behavior and unpredictable market forces. Social justice is closely related to the concept of relational justice, which is about the just relationship with individuals who possess features in common such as nationality, or who are engaged in cooperation or negotiation.

Question: when was the term social justice first used?
Answer: the 1840s.
1840s.