'Ahmed Rabbani, detained as part of America's war on terror, was released in February. His artworks depict life in detention: a windowless cell, a man hung by his wrists, a force-feeding chair.'

Art is among the few existing testaments to life inside the Guantanamo Bay facility, which opened a few months after the Sept. 11, 2001 attacks to hold foreign suspects in America's war on terror. 

In May, 20 of Rabbani's paintings were shown at a gallery in the Pakistani city of Karachi. U.S. authorities didn't allow some works depicting torture and suffering to be taken from Guantanamo, but other artists re-created them from descriptions written by Rabbani's lawyer.Photo by Insiya Syed

"You can imagine why they wouldn't let these pictures out," said Rabbani's lawyer, Clive Stafford Smith. "It's not an issue of national security, but of national embarrassment."