Police clashed with demonstrators protesting against Israeli participants at the VicenzaOro tradefair in Vicenza on Saturday.
The clashes took place after the march, which started shortly before 11.20 am with about 500 participants, deviated from the established route, with protestors trying to the area of the trade-fair centre.
At this point police in riot gear charged.
The demonstrators threw smoke bombs and firecrackers and the police responded by firing water cannons.
Four police officers were injured in the clashes, sources said.
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