Riot police detains a demonstrator during clashes in Athens, Greece, 05 October 2011. Civil Servants' Supreme Administrative Council (ADEDY) and General Confederation of Workers of Greece (GSEE), Greece's two largest umbrella federations representing the public and private sector staged a 24-hour nationwide strike protesting against the ongoing austerity measures taken by the Greek government.

Policemen take their positions around the parliament during a protest in Athens' Syntagma (Constitution) square October 5, 2011. Police fired tear gas at stone-throwing youths in central Athens Wednesday, where thousands of striking state sector workers marched against cuts the government says are needed to save the nation from bankruptcy.

A protester clashes with a policeman during an anti-austerity rally in Athens' Syntagma (Constitution) square October 5, 2011. Police fired tear gas at stone-throwing youths in central Athens Wednesday, where thousands of striking state sector workers marched against cuts the government says are needed to save the nation from bankruptcy.

Anti riot policemen clash with demonstrators during a protest rally marking the 24-hour general strike on October 5, 2011. More than 30,000 public sector workers demonstrated in Greece today in a strike against deeper austerity cuts that shut down courts, schools and transport, including air traffic.

Protestors push a high fence blocking the entrance to the Greek Parliament during a demonstration in central Athens, Greece, 05 October 2011. Civil Servants' Supreme Administrative Council (ADEDY) and General Confederation of Workers of Greece (GSEE), Greece's two largest umbrella federations representing the public and private sector staged a 24-hour nationwide strike protesting against the ongoing austerity measures taken by the Greek government.