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Sri Lankan activists of the 'Dead and Missing Person's Parents' organisation hold placards as they take part in a demonstration outside the United Nations offices in Colombo on May 10, 2016. UN officials have said they have been told that up to 22,000 people are still missing seven years after the end of Sri Lanka's Tamil separatist war in 2009. / AFP / LAKRUWAN WANNIARACHCHI (Photo credit should read LAKRUWAN WANNIARACHCHI/AFP/Getty Images)

Sri Lankan activists of the 'Dead and Missing Person's Parents' organisation hold placards as they take part in a demonstration outside the United Nations offices in Colombo on May 10, 2016. 
UN officials have said they have been told that up to 22,000 people are still missing seven years after the end of Sri Lanka's Tamil separatist war in 2009.  / AFP / LAKRUWAN WANNIARACHCHI        (Photo credit should read LAKRUWAN WANNIARACHCHI/AFP/Getty Images)