“On 11 January 2002, the US transferred the first detainees to Guantánamo Bay, Cuba. Five years later, despite widespread international condemnation, hundreds of people remain there without trial. Join activists worldwide in demanding the closure of Guantanamo, fair trials and justice for all”.
From the amnesty international australia website, where there is more information and a list of things you can do if you – like I – believe that Guantanamo Bay should be closed.