TOPSHOTS Protestors shout slogans and hold a placard reading 'Goverment massacre in Suruc- killer goverment' as they march on Istiklal Avenue in Istanbul during a demonstration on July 20,2015, following an explosion in Turkey's southern town of Suruc. A suspected Islamic State suicide bomber killed at least 31 people in an attack on a Turkish cultural centre where activists had gathered to prepare for an aid mission in the nearby Syrian town of Kobane. AFP PHOTO / OZAN KOSE