s it possible to have a carefully regulated, politically correct orgy? The experiment has been going on for some time at the annual Burning Man festival in the Nevada desert, and by this summer, the answer seems to be . . . no. The festival’s venerable Orgy Dome — once a symbol of all that was Burning Man: decadent, foolhardy, almost Caligulan — has slid into obsolescence, a victim of societal trends like the litigation explosion, sexual correctness and the #MeToo movement. Consider the account of a Reddit user who recently visited the Orgy Dome. He said that after he had been...