Twin artists' 'photobombs' provoke explosive reactions

In their evocative new show, Unrest, the impish Essop twins hint that the only thing worth fighting for is ungoverned thought, writes Ashraf Jamal. "It is useless for a critic to tell me that something is a work of art: He must make me feel it for myself. He must get at my emotions through my eyes." These words, written by English art critic Clive Bell in 1913, are often forgotten by critics and art marketers who insist on explaining away art with clever words.