[Video] Guernica, Picasso, art & revolution

Alan Woods, of the International Marxist Tendency, speaks to University of Arts' London students at the Whitechapel Gallery, London, where a replica of Picasso's great painting of the massacre at Guernica is on display. Using this powerful masterpiece as a starting point, Alan explores what makes great art; to what extent is great art a reflection of the period from which it comes; and can propaganda be great art?