Where did this all come from: the vitriol and vice, the anger and hatred, the looting, the riots, the destruction, the nihilistic confusion, the science-denying gender-bending sexuality, the suicidal infatuation with socialism, the adolescent whining for safety rather than freedom? Just look over your son’s or daughter’s shoulder, and you might find the answer. Mr. Kay, who teaches English at... a Philadelphia public school, expressed his concern about the “damage” that “parents” might cause if they overheard the lessons he had prepared for their children. Mr. Kay then described how “conservative parents” are his chief concern when he and his...