Policemen try to disperse hundreds of migrants by spraying them with fire extinguishers, during a registration procedure which was taking place at the stadium of Kos town, on the southeastern island of Kos, Greece, Tuesday, Aug. 11, 2015. Fights broke out among migrants on the Greek island of Kos Tuesday, where overwhelmed authorities are struggling to contain increasing numbers of people arriving clandestinely on rubber dinghies from the nearby Turkish shore. (AP Photo/Yorgos Karahalis), APTOPIX