Former Guantanamo Bay detainees find that life doesn't get any easier

"Our view is that if surveillance has happened, it is undemocratic," said director Kamila Hyat. "This is a violation of human rights."

Khan said he never harbored any Islamic militant sentiments, but that his treatment at the hands of US and Pakistani authorities has made him bitter.

"If they are thinking that they can get peace by force, it is impossible," Khan said. "People will start hating them."