Sol Stern takes dead aim at a growing trend among American education schools, namely the fact that they have been overrun by zealots who want to drum it into the minds of teachers that their job is to instruct students in the many ills of the world and turn them into advocates for “social justice.” You can read Stern’s essay here.
Justice (or injustice) is an attribute of individual actions and it makes no sense whatsoever to evaluate “society” in those terms because it is not a conscious actor, but merely an abstraction. Hayek made that point his book The Mirage of Social Justice.
