Kinoteka, the adventurous Polish film festival, opened last night with a gala screening at the Curzon Renoir of veteran director Jerzy Skolimowski’s Essential Killing, a film that has provoked some vicious responses. The Observer said it was “deeply silly”, one usually fairly reliable film blogger (Shades of Caruso) was “murderously angry at having my time wasted in such a careless manner. It has no allegorical dimension, no coherent metaphorical throughline, no momentum, no narrative point, no political message, no aesthetic merit… no energy, no wit or dread or suspense or cathartic aggression or whimsy or charm”.