The renowned Chinese artist and freedom fighter Ai Weiwei has unveilled his new installation, “@Large: Ai Weiwei on Alcatraz” in Alcatraz, the former Spanish fortress and US military prison in California. The seven-month long exhibition will include a portrait of jailed Tibetan singer Lolo, among 176 portraits of former and current prisoners around the world. Ai Weiwei is currently unable to leave China following confiscation of his passport.