LONDON.- Lisson Gallery presents a major retrospective of video and new works by Santiago Sierra. The exhibition features fifty-three videos that fall into three distinctive groups; performance based works, video documents of sculptural projects and programmed films. New works include NO, Global Tour (2011) – a film documenting the manufacture and transportation of a monumental sculpture in the form of the word “NO”. Conceived to be understood in as many contexts as possible, the “NO” gradually assumes a complex semantic load during a journey full of eventualities, accidents and unexpected events in various world cities. A three metre high “NO” sculpture accompanies the film’s pared down minimalism presenting a powerful portrait of humanity asserting itself everywhere and at all times by forcefully saying: “NO”. Addressing situations of exploitation and marginalisation, Sierra’s work can be seen as provocativ