The film dives into questions of ownership, theft and the sale of street art, whose creators may never see a penny when their public displays are taken into private hands.
Suffering is packaged and sold in Palestinian areas as one of the main commodities for tourists.
At the event an actor dressed as Queen Elizabeth II pulled back a red curtain that covered an etching reading, 'Er...Sorry.'
Newest work by the elusive guerrilla artist comes after the opening in March of his biggest project in two years - the Walled Off Hotel in Bethlehem.
You've always wanted to go to Bethlehem and see the Church of Nativity but what else is there?