What will the existence of the elite class, whose conspicuous consumption is a status symbol and has a negative impact on the environment, look like once everything has been completely destroyed? Joshua Oppenheimer’s The End imagines what that future could look like, joining the ranks of other recent films that have put outrageous privilege in their often sanctimonious cross hairs. But the willful blindness of the ruling class is something that Oppenheimer has intimately grappled with in his documentary work, namely The Act of Killing and The Look of Silence, and he attempts to carve out a unique approach to eating the rich on screen by dressing up his venom in the fanciful garbs of a Golden Age musical.

Set 20 years after an environmental collapse has wiped out society, The End takes place in a lavish underground bunker within the depths of a salt mine. This is the home...