Prime Minister Alexis Tspiras

Some 17,000 people took to the streets of Athens and Thessaloniki on Monday to say 'No' to  the latest offer of a bailout deal, accusing Greece's international creditors of blackmail.

"Our lives do not belong to the creditors!" read banners held aloft by demonstrators, many of whom support Prime Minister Alexis Tspiras and said they would heed his call to vote against the latest deal in a referendum on Sunday -- despite the risks the country might then go crashing out of the eurozone.