By now, there’s a reasonable chance you’ve seen Fox Business anchor Neil Cavuto’s interview with Million Student March organizer Keely Mullen. It was all over the Internet in recent days -- and particularly the right-leaning portion of said Internet, which delighted in a liberal college student struggling to explain how giving everyone free college would be paid for. The exchange was, in a word, uncomfortable. Cavuto began by giving Mullen the floor to lay out the demands of her group, which orchestrated student walkouts at 110 college campuses last Thursday. They were: free tuition at public universities, the cancellation of...