gunnar: for now, a tense calm has descended on diyarbakir.ut yasar is concerned violence will increase again if the yes vote wins and erdogan gets major new powers. for most kurds, the banners flying all over the city mean anything but freedom. michelle: kwasi owusu left his home in ghana, dreaming of a better life for himself and his family in europe. but after 15 years toiling away as a farm laborer in southeastern spain, he has little to show for it. he's one of many economic migrants from africa who work and live in inhumane and often dangerous conditions. our reporter visited the sea of plastic greenhouses that blanket the region to find out how such exploitation could happen. reporter: kwasi owusu is showing us around his make-shift hut. 15 years ago, he journeyed from ghana to spain to find work. but his hopes of finding a better life have been well and truly dashed. mr. owusu: look at that. if it caught fire, we'd have a problem. we're expected to work hard, so we have a right to a decent place to live. it's not fair that we have to l