Occupy Wall Street protests went global today. At least 500 activists in Rome attacked police, two banks and a supermarket. Authorities responded with tear gas and water cannons.

Italian media reports that as many as 100,000 people rallied in the city Saturday, making one of the biggest OWS movements so far.

The following shots are from the violent Roman clashes between protesters, the Carabinieri and the tax police.

A man standing next to a burning Carabinieri vehicle shows a placard depicting Italian Premier Silvio Berlusconi and reading in Italian "Throw the shoe at Silvio" during clashes in Rome, Saturday AP

Protesters hurl objects at police as a burning car is seen in foreground AP

A masked protester hurls a stone during clashes in Rome AP

Italian police fired tear gas and water cannons as protesters in Rome turned a demonstration against corporate greed into a riot Saturday, smashing shop and bank windows, torching cars and hurling bottles AP

Protesters stand by a burning car AP

Protesters prepare to stave off a police baton AP

A tax police officer is helped by colleagues as he lies on the ground during clashes in Rome AP