These major and necessary movies have all faced the same and thorny problem: how to evoke Holocaust without showing its unbearable horror? And of all the approaches adopted or considered, that of ‘‘The Zone of Interest’’ by Jonathan Glazer – which has just won the Grand Prix at the 76th Cannes Film Festival – is by far the most trying: the British filmmaker has the singular and confusing choice to film Auschwitz from the adjacent house of Nazi commander Rudolf Höss, who ran the terrible camp from May 1940 to December 1943, and again from May to September 1944.