CLEAN: Shows exterior shots busy roads & streets in Athens & man digging up ground for planting. on July 22, 2015 in Athens, Greece.

CLEAN: Shows exterior shots riot police getting prepared in the street & people crossing a road. on July 22, 2015 in Athens, Greece.

CLEAN: Shows exterior shots people crossing a road in Athens & yellow taxis driving on the roads. on July 22, 2015 in Athens, Greece.

CLEAN: Shows exterior shots people walking through Syntagma Square. on July 22, 2015 in Athens, Greece.

CLEAN: Exterior shots people walking in the streets of Athens & street vendor selling kritsinia sesame bread sticks. on July 22, 2015 in Athens, Greece.

Clashes between Refugees from Syria and Migrants from Afghanistan

ATHENS, GREECE - SEPTEMBER 18: Demonstrators march to the office of Golden Dawn Party in Piraeus during a rally to mark the fifth death anniversary of Greek rapper Pavlos Fissas killed by a Golden Dawn supporter, in Keratsini, Athens,...

PIRAEUS, GREECE - SEPTEMBER 29: Another 400 refugees from different countries who left Lesvos on Friday in a bid to reduce congestion on the island's main camp Moria, are transported to Piraeus Port in Greece on September 29,...

CLEAN : Volunteers help stranded migrants in Athens and Piraeus

CLEAN : Greek family falls

CLEAN : Libya evacuees arrive in Greece

CLEAN : Greek family falls

CLEAN: Greece opens gates to eastern investment

CLEAN : Riot police sent against Greek

Unbeaten this season Barca are leading their group in the UEFA Champions League as they face Ernesto Valverde's former club Olympiakos in Athens on Tuesday

Piles of charred clothing sit in a storage area after a fire destroyed 20 tonnes of clothes and blankets donated in Greece for war-hit Ukrainian refugees, an aid group says (Footage by AFPTV via Getty Images)

CLEAN : Migrants arrive at Athens port

CLEAN : Angelina Jolie visits improvised refugee camp in Athens

CLEAN : Athens Piraeus port transformed into refugee camp

CLEAN : After island ordeal desperate Syrians rerouted to Athens

VOICED: Greece opens gates to eastern investment

CLEAN : Riot police sent against

CLEAN: Shows exterior high shots cityscape Athens Piraeus district Karaiskakis Stadium & the Peace & Friendship Stadium. on July 22, 2015 in Athens, Greece.

CLEAN: Shows exterior high shots Athens city & rooftop of the Hellenic parliament. on July 22, 2015 in Athens, Greece.