TOPSHOTS Placards are left outside the headquarters of the Bank of Greece in Athens on October 31, 2012 after a protest of state bond holders. Greece's main union on October 31 called a 48-hour general strike for November 6-7 in protest at a new wave of austerity measures unveiled by the government in order to unlock EU-IMF bailout loans. AFP PHOTO / ARIS MESSINIS - GREECE OUT -