Protestors shout slogans during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/SIMELA PANTZARTZI
Demonstrators clash with riot policemen during a strikers rally in central Athens on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout. EPA/ORESTIS PANAGIOTOU
Immigrants from Africa shout slogans during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/SIMELA PANTZARTZI
Protestors clash with riot police during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/SIMELA PANTZARTZI
Immigrants from Africa rally during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/SIMELA PANTZARTZI
Protestors clash with riot police during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/SIMELA PANTZARTZI
Riot policemen try to avoid a homemade fire bomb thrown by protestors during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/SIMELA PANTZARTZI
Demonstrators marchduring a rally by strikers in central Athens on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout. EPA/ORESTIS PANAGIOTOU
Protesters clash with riot police during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/SIMELA PANTZARTZI GREECE OUT
Riot police officers use tear gas equipment against demonstrators during a rally by strikers in central Athens on 24 February .A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout. EPA/ORESTIS PANAGIOTOU
Protesters gather to participate in a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/KATERINA MAVRONA
Demonstrators marchduring a rally by strikers in central Athens on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout. EPA/ORESTIS PANAGIOTOU
A line of riot police officers protect a shuttered branch of the National Bank of Greece during clashes with demonstrators in a striker's rally in central Athens on 24 February .A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout. EPA/ORESTIS PANAGIOTOU
Protesters clash with riot police during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/ORESTIS PANAGIOTOU
Riot police officers clash with demonstrators in a striker's rally in central Athens on 24 February .A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout. EPA/ORESTIS PANAGIOTOU
Protesters clash with riot police during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/ORESTIS PANAGIOTOU
Protesters clash with riot police during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/ORESTIS PANAGIOTOU
Protesters clash with riot police during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/ORESTIS PANAGIOTOU
Protesters clash with riot police during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/ORESTIS PANAGIOTOU
Protesters clash with riot police during a demonstration in central Athens, Greece, on 24 February 2010. A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout protesting tough government measures, including salary freezes and tax increases. Greece has vowed to tackle the debt crisis that has shaken the entire European Union and put the euro currency under pressure. EPA/ORESTIS PANAGIOTOU
Riot police officers clash with demonstrators in a striker's rally in central Athens on 24 February .A nationwide strike has paralysed Greece as more than three million public and private sector workers embarked on a 24-hour walkout. EPA/ORESTIS PANAGIOTOU