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TOPSHOT - Zimbabwe's opposition supporters set up a burning barricade as they clash with police during a protest for electoral reforms on August 26, 2016 in Harare, Zimbabwe. Riot police in Zimbabwe fired tear gas, beat up protesters and blocked off the site of an opposition rally in Harare on August 26, 2016, the latest in a string of demonstrations to hit the country. The rally -- which was authorised by a court -- was to demand electoral reforms before 2018 when 92-year-old President Robert Mugabe, who has ruled the southern African country for decades, will seek re-election. / AFP / ZINYANGE AUNTONY (Photo credit should read ZINYANGE AUNTONY/AFP via Getty Images)

TOPSHOT - Zimbabwe's opposition supporters set up a burning barricade as they clash with police during a protest for electoral reforms on August 26, 2016 in Harare, Zimbabwe.
Riot police in Zimbabwe fired tear gas, beat up protesters and blocked off the site of an opposition rally in Harare on August 26, 2016, the latest in a string of demonstrations to hit the country. The rally -- which was authorised by a court -- was to demand electoral reforms before 2018 when 92-year-old President Robert Mugabe, who has ruled the southern African country for decades, will seek re-election. / AFP / ZINYANGE AUNTONY        (Photo credit should read ZINYANGE AUNTONY/AFP via Getty Images)