Trouble flared at a march in Cardiff as hundreds turned up to protest against the ongoing violence in Gaza.
In ugly scenes, as protesters passed the city's Mill Lane - popular with diners and drinkers - chairs and tables were thrown at them by people drinking outside in the bars.
Witnesses saw chairs and tables being thrown into crowds as the protest passed by.
Placards were also apparently used as weapons as anger erupted on the busy street, which is packed with bars and restaurants.
Videos posted on YouTube and Facebook showed men throwing chairs into the crowd.
South Wales Police said around 1,500 people took part in the march while the disorder broke out on Mill Lane and St Mary Street in two separate incidents.
A 22-year-old man, from Caerphilly, was arrested for assault and a 33-year-old man, from Pontypridd, was arrested for affray.
Police said neither of the men were from the rally group.
Both men have been bailed pending further enquiries and police are speaking with witnesses and examining footage from the event.
Chief Inspector Dan Howe said: “The police were there to ensure the safety of everyone involved and the vast majority of people behaved in a calm and sensible way, however extra officers attended to provide reassurance to the community.
“Unfortunately not all of those in Cardiff yesterday afternoon were well-behaved and violence broke out with a small minority which disrupted an otherwise peaceful demonstration.