Around 70,000 protesters took to the streets in Athens today, according to authorities, as two separate demonstrations were staged in the city while EU leaders discussed the plight of Greece in Brussels.
Four demonstrators and three policemen were injured in clashes, but none of the injuries are believed to be serious.
Police said seven people, out of more than 100 detained, had been arrested.
More top news
Very windy with gales possible
Strong performance from world number 100 meant Great Britain very nearly dominated day one of the competition.
As a promotion Black Friday is flawed. While it whips up demand and redistributes it the event doesn't obviously generate additional sales.