A policeman needed stitches in his leg after being hit with a bottle at Broadstairs Folk Festival.
The officer was among a group hit with a wine bottle at the annual event on Friday night.
Kent Police were dealing with reports of anti-social behaviour when they came under attack in Victoria Parade, Broadstairs, at about 10.30pm.
The force said a bottle was thrown from above and a shard of glass hit an officer.
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