Kurdish people gather during a march on December 28, 2014 at Uludere (Roboski) in Sirnak. The march marks the third anniversary of the December 28, 2011 killing of 34 Turkish-Kurdish civilians working as smugglers at the Turkey-Iraq border in a botched raid by Turkish military jets, known as the Roboski strike, that mistook the group for Kurdistan Workers’ Party (PKK) militants. AFP PHOTO / STR