There is something unsettling about sitting in a German theatre laughing at Nazis. How unsettling depends on the type of humour that prompts the laughter. Is it meant to set the audience apart from the stage action, or does the laughter stem from the discomfort of proximity? When I saw the satire Nachtland staged recently at Berlin’s prestigious Schaubühne (a production also runs in an English translation at the Young Vic in London until 20 April), I perceived the ripples of laughter filling the room as a sort of embarrassed self-awareness. Like a tense moment of getting caught – a...