At Tate Britain, until 12 May 2013
In 1930 Kurt Schwitters, one of the greatest revolutionary and innovative artists of the 20th century, observed that "everything was broken down into shards and needed to be put back together again". This was to prove something of an understatement.
Born in 1887, and having lived through the carnage of the First World War, the "lost" German Revolution and the traumas of the Weimar state, Schwitters lived to witness the barbarity of fascism. He endured exile, internment, poverty and the horrors of "total war" before dying in virtual obscurity in 1948.