A banner supporting Snowden displayed in Hong Kong

People walk past a banner supporting Edward Snowden, a former CIA employee who leaked top-secret documents about sweeping U.S. surveillance programs, at Central, Hong Kong’s business district, Monday, June 17, 2013. Top officials from the Obama and Bush administrations say the government’s newly exposed secret surveillance programs have been essential to disrupting terrorist plots and have not infringed on Americans’ civil liberties. The officials justify the massive trawling for phone and Internet data as new revelations add to public disclosures about the classified operations. <AP Photo/NEWSis/Kin Cheung>

A banner supporting Edward Snowden, a former CIA employee who leaked top-secret documents about sweeping U.S. surveillance programs, is displayed at Central, Hong Kong’s business district, Monday, June 17, 2013. <AP Photo/NEWSis/Kin Cheung>