This week’s video course at Prager University asks an intriguing question: What is “Social Justice”.

In this week’s video, author and columnist Jonah Goldberg tells you how to stump your left-wing friends: Ask them to define the term “social justice.” That should be easy, right? After all, the term is everywhere: on websites and college campuses, in the mission statements of businesses and charities, and in United Nations reports.

As Mr. Goldberg explains, there is an Alice-in-Wonderland quality to the term “social justice”: It means whatever its champions want it to mean. But there is one core idea that is always at the heart of social justice — an idea that is so destructive and dangerous that the Nobel-prize winning economist F.A. Hayek wanted to dedicate the last years of his life making the term “social justice” shameful.