“On a foggy April morning in 2010, the Polish president’s plane crashed over Smolensk in eastern Russia, killing him and 95 other members of Poland’s political and military elite, traumatizing the nation and opening a bitter political divide over what caused the disaster. Now the fissures have spread to the cultural realm, as filmmakers, writers and artists fiercely debate how – or even whether – to portray this still-visceral history.”