Is There Ever Any "Critical Thinking" About Social Justice?

In this article, Ashley Thorne discusses the continuing vitality of the "social justice" crusade on many American campuses. I'd be willing to bet my last dollar that in these "social justice" programs, students are never led to question whether the term actually has any meaning. Are students ever called upon to read, for example, any part of Hayek's fabulous book The Mirage of Social Justice in which he argues that the term is not only meaningless, but leads to dangerous policy ideas? I doubt it. Rather, "social justice" is treated as an unquestionable if vague ideal.