Chinese artist Ai Wei opens installation on the island . Ai 's theme includes themes of imprisonment , torture . It also aims to raise awareness about prisoners of conscience . They can sit inside the barren concrete cell and listen to their voices . Along with notorious criminals , Alcatraz also features conscientious objectors and Native Americans .
Chinese artist Ai Wei opens installation on the island . Ai 's theme includes themes of imprisonment , torture . It also aims to raise awareness about prisoners of conscience . Along with notorious criminals , Alcatraz also features conscientious objectors and Native Americans .