“What do you think of this?” So began a phone call from Todd Starnes of FoxNews Radio. Starnes called me for a comment on a shocking story: A band at a high school near Gettysburg, Pennsylvania performed a halftime show titled, “St. Petersburg 1917,” a musical commemoration of the Bolshevik Revolution, replete with hammers and sickles, military uniforms, and red flags. “No way,” I responded. “Are you sure this wasn’t a joke, a parody?” It wasn’t. And parents of the students aren’t laughing. The superintendent of the school genuinely pleaded innocence. “It’s a representation of the time period in history,...