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Members of the Guardia di Finanza protect themselves as they stand in front of the Economy minister during clashes on the sidelines of an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. ALBERTO PIZZOLI/AFP/Getty Images ( 523910659 )

Thousands of people march during an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. ALBERTO PIZZOLI/AFP/Getty Images ( 523908173 )

Thousands of people take part in an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. ALBERTO PIZZOLI/AFP/Getty Images ( 523907377 )

People play with giant balloons during an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. FILIPPO MONTEFORTE/AFP/Getty Images ( 523906045 )

Anti-riot policemen block a street on the sidelines of an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. FILIPPO MONTEFORTE/AFP/Getty Images ( 523908135 )

People clash with police in front of the Economy minister on the sidelines of an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. FILIPPO MONTEFORTE/AFP/Getty Images ( 523909582 )

A man throws a bottle in direction of policem during clashes on the sidelines of an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. FILIPPO MONTEFORTE/AFP/Getty Images ( 523909667 )

Anti-riot policemen stand in a street during clashes on the sidelines of an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. FILIPPO MONTEFORTE/AFP/Getty Images ( 523909778 )

Anti-riot policemen stand in front of the Transports minister during clashes on the sidelines of an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. ANDREAS SOLARO/AFP/Getty Images ( 523909812 )

Thousands of people march as anti-riot policemen look on during an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. ALBERTO PIZZOLI/AFP/Getty Images ( 523906575 )

People gather in front of the St Giovanni church in Rome before the start of an anti-austerity protest led by anti high-speed rail movement (No Tav) and an association for rights to housing, on October 19, 2013. ALBERTO PIZZOLI/AFP/Getty Images ( 523904709 )

A group of migrants take part in an anti-austerity protest led by anti high-speed rail movement (No Tav) and an association for rights to housing, on October 19, 2013. ALBERTO PIZZOLI/AFP/Getty Images ( 523905247 )

A couple kiss during an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. ALBERTO PIZZOLI/AFP/Getty Images ( 523908297 )

Thousands of people take part in an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. FILIPPO MONTEFORTE/AFP/Getty Images ( 523905649 )

A man uses a horn speaker during an anti-austerity protest led by anti high-speed rail movement (No Tav) and an association for rights to housing, on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. ALBERTO PIZZOLI/AFP/Getty Images ( 523905739 )

Italian Financial police officers hold their shields to take cover during a protest in Rome, Saturday, Oct. 19, 2013. Anti-austerity protesters in Rome threw eggs and firecrackers at the Finance Ministry during a march against cuts to welfare programs and a shortage in low-income housing. More than 4,000 riot police were dispatched to maintain order as tens of thousands of protesters marched through the capital on Saturday. There were moments of tension when demonstrators passed near the headquarters of an extreme-right group, but police intervened when a few bottles were thrown. (AP Photo/Gregorio Borgia) ( Italy Anti Austerity Protests )

People try to broke the windows of an Unicredit bank agency during an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. ALBERTO PIZZOLI/AFP/Getty Images ( 523909315 )

Protesters set a camp in front of the Transport minister at Porta Pia after an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. FILIPPO MONTEFORTE/AFP/Getty Images ( 523910279 )

Protesters set a camp in front of the Transport minister at Porta Pia after an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. FILIPPO MONTEFORTE/AFP/Getty Images ( 523910293 )

People hold umbrellas with giant letters to form the phrase "We don't fear hydrant" during an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. FILIPPO MONTEFORTE/AFP/Getty Images ( 523906308 )

A group of men from the CasaPound (a social center of fascist inspiration) faces anti-riot policemen as thousands of people take part in an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. ALBERTO PIZZOLI/AFP/Getty Images ( 523907765 )

Carabinieri (Italian paramilitary police) officers hold their shields to protect themselves from smoke bombs thrown by demonstrators during a protest in Rome, Saturday, Oct. 19, 2013. Anti-austerity protesters in Rome threw eggs and firecrackers at the Finance Ministry during a march against cuts to welfare programs and a shortage in low-income housing. More than 4,000 riot police were dispatched to maintain order as tens of thousands of protesters marched through the capital on Saturday. There were moments of tension when demonstrators passed near the headquarters of an extreme-right group, but police intervened when a few bottles were thrown. (AP Photo/Gregorio Borgia) ( Italy Anti Austerity Protests )

People clash with policemen near the Economy minister during an anti-austerity protest on October 19, 2013 in Rome. Tens of thousands of people took to the streets in Italy and Portugal on Saturday to protest against budget cuts and the social cost of the economic crisis, amid concern over possible clashes in Rome. FILIPPO MONTEFORTE/AFP/Getty Images ( 523909278 )

A man wearing a Guy Fawkes mask takes part in an anti-austerity protest led by anti high-speed rail movement (No Tav) and an association for rights to housing, on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. ALBERTO PIZZOLI/AFP/Getty Images ( 523905783 )

Anti-riot policemen patrol during an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. ALBERTO PIZZOLI/AFP/Getty Images ( 523906679 )

A group of men from the CasaPound (a social center of fascist inspiration) holding batons faces anti-riot policemen as thousands of people march during an anti-austerity protest on October 19, 2013 in Rome. Between 3,000 and 4,000 police officers have been deployed, Italian media reports said, and protest organizers say they expect more than 20,000 to join. ALBERTO PIZZOLI/AFP/Getty Images ( 523907864 )