Visitors gather beneath the Christ the Redeemer statue as Maracana stadium, the site of the Olympic opening ceremonies, stands in the background on July 4, 2016 in Rio de Janeiro, Brazil.

Political, economic and public health problems ranging from the impeachment of President Dilma Rousseff to the spread of the Zika virus have plagued the lead-up to the 2016 Summer Olympic Games in Rio, which has cost Brazil as much as $20 billion dollars according to some estimates.
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