Greece's new austerity plan - a mixture of tax increases and spending cuts - is designed to save around $6.5bn.
It includes proposals to freeze pensions, triggering widespread anger amongst the elderly.
The measures are so drastic that even the Greek prime minister is talking up the necessity of a "wartime" mentality.
Al Jazeera's Barnaby Phillips reports from Athens, as thousands of protesters clash with police in what they see is a "fight for a just society".
Source: Al Jazeera