A cynic might say that in making Schindler’s List, a film about an opportunistic businessman who used his factory to shelter Polish Jews from extermination in the second world war, Steven Spielberg, that undisputed master of commercial uplift, has somehow managed to find the silver lining in the darkest cloud of the 20th century. And the cynic would be right to a point: Spielberg does seek to eke out whatever humanity he can find from this scenario, even if that humanity is suppressed by arrogance and self-loathing. But don’t miss how dark he makes the cloud. Thirty years later, it...