'Street Spirit' is a celebration of 50 extraordinary protests and demonstrations from around the world that have used humour, courage, absurdity and creativity to make their mark. Among the many instances of imaginative defiance within, you'll discover the surprising impact of Lego figures in Siberia, red-hatted dwarves in Poland and a donkey holding a press conference in Azerbaijan - not to mention the story of how Darth Vader helped to effect a global arms treaty.