Greek police escort migrants to a police van outside a former Olympic indoor stadium in Faliro, southern Athens, on Wednesday, Dec. 16, 2015. Hundreds of people have been temporarily housed in the stadium after being removed a few days ago from Greece's northern border with Macedonia, which only allows Syrians, Afghans and Iraqis through on their trek to wealthier European countries - rejecting others as economic migrants who do not merit refugee protection. (AP Photo/Yorgos Karahalis)