I wish I could have a closer look, and not in a very distant future. Though I'm realizing that such personal experience will vary from city to city, city district to city district, not mentioning villages. Keeping firm numbers on immigration, especially illegal immigration is a tricky business. For that reason I wouldn't mind what official government statistics, or university published paper, say on this subject. Even the Greek ones, and even with big uncertainty.
It might be the case that Greek's biggest immigration problem is with Albanians, and not with Near Eastern folks or SSA. Albanians are Europeans and very related to Greeks, but perhaps being Muslims they are very scary to Yetos? Anyway, to learn more on this subject, I was looking for some numbers. Unfortunately I'm not able to understand them from Yetos' posts. Lost in translation and statistics are in Greek.
the problem in Greece is not the origins, Albanians came for better money and now they leave, from 1 500 000 left only 600-800 000 after 2008 crisis,
and most Albanians today have gren/white cards, and they can come and work 3 months only with passport, due to the posiible entrance and connection with EU
most went to Massachusets Turkey and England
the problem is that Greece has immigrants, about 20 000 000 with 3rd generation in all over the world,
is having crisis, unemployment, and is accepting illegal immigrants, so the rest Europe accept legally the ones who are illegal in Greece,
I mean if in Greece exist 100 illegal and ask assylum for Greek Id and residence only 20 and the rest 80 ask for elsewhere EU that is not correct,
anyway, we get money from EU for that, but can not be continued, we do not want to be Ellis island,
refugge camps should not be only in Greece Malta and Italy, they should be all over Europe,
EU must share the weight, and not put laws that fits to some only,
Either the laws must be sink them all, either we share the Illegal immigration and build camps all over Europe, from Ireland to Lithuania