People use masks with pictures of Snowden masks during the testimonial of Greenwald before a Brazilian Congressional committee on NSA's surveillance programs, in Brasilia
People use masks with pictures of former NSA contractor Edward Snowden masks during the testimonial of Glenn Greenwald, the American journalist who first published the documents leaked by Snowden, before a Brazilian Congressional committee on NSA's surveillance programs, in Brasilia August 6, 2013. REUTERS/Ueslei Marcelino (BRAZIL - Tags: POLITICS MEDIA TPX IMAGES OF THE DAY)
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