Greek protests turn violent

Thanassis Stavrakis / AP

A motorcycle policeman burns as his colleague tries to help him after protesters throw a petrol bomb in Athens, Wednesday, Feb. 23. Scores of youths hurled rocks and petrol bombs at riot police after clashes broke out Wednesday during a mass rally taking place as part of a general strike.

Thanassis Stavrakis / AP

A motorcycle policeman burns as his colleague tries to help him after protesters throw a petrol bomb in Athens, Wednesday, Feb. 23. Scores of youths hurled rocks and petrol bombs at riot police after clashes broke out Wednesday during a mass rally taking place as part of a general strike.

Aris Messinis / AFP - Getty Images

A policeman on fire is helped by a colleague during clashes with demonstrators in central Athens on Feb. 23. Police fired tear gas near the Greek parliament today as clashes broke out with protesters throwing stones and firebombs during a demonstration against austerity measures.

Angelos Tzortzinis / AFP - Getty Images

A policeman is seen in flames as he tries to escape after a petrol bomb was thrown at him during riots in front of the parliament in Athens on Feb. 23. Greece is hit with another general strike against austerity as Prime Minister George Papandreou seeks to convince the cash-strapped country's eurozone partners to extend the repayment of a massive rescue loan.