The BBC reports Rome protest against cuts descends into violence
Occupy Wall Street Protests Go WorldwideRiot police have fought militant protesters in Rome as the biggest of a series of global rallies against banks and politicians tipped into violence.
At least 70 people were injured, three of them seriously, as police fought masked rioters with tear gas, water cannon and batons.
Other protesters tried to stop the rioters as they attacked cars and businesses, marring a peaceful rally.
The day saw coordinated protests in cities worldwide, most of them small.
Inspired by the Occupy Wall St movement and Spain's "Indignants", demonstrators turned out from Asia to Europe and back to New York for an event organisers said on their website was aimed at initiating "global change".
"United in one voice, we will let politicians, and the financial elites they serve, know it is up to us, the people, to decide our future," they added.
Tens of thousands of people had turned out to demonstrate peacefully in Rome.
However militants dressed in black infiltrated the crowd and began attacking property. Offices belonging to the Italian defence ministry were set on fire, some cars were burnt including an armoured police vehicle, in addition to attacks on cash dispensers and bank and shop windows.
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