In his landmark book “Coming Apart,” Charles Murray argued that wealthy Americans are increasingly isolated in cultural bubbles, a trend that is tearing the fabric of the country apart at its seams. Last Thursday, a mob of students protesting Murray at Middlebury College went a long way to proving him right.

In an effort to seal their school’s bubble off from the voices of ideological dissent, student protesters refused to let Murray speak, descending upon his lecture in an unruly horde, ultimately leaving one professor in a neck brace for her efforts to escort him off campus.