Two men have been charged after allegedly attacking a police officer during a brawl at a pub in Sydney’s CBD.

At about 5.40pm yesterday, police were called to a hotel at Broadway after reports of a group of people at the bar who were allegedly yelling offensively at passersby before a brawl broke out.

Officers attempted to disperse the group, upon which it’s alleged a 48-year-old man attacked a male constable.

It’s further alleged that when the constable attempted to arrest the 48-year-old, a 29-year-old man also attacked the officer.

Police deployed capsicum spray and both men fled but were arrested after a short foot pursuit.

The men were charged with assaulting police, affray, and resisting or hindering police.

They were refused police bail and will appear in court today.

9News understands the two men had earlier been involved with the anti-immigration protests in the city.

Police say the officer who was allegedly attacked suffered minor injuries.

The investigation is ongoing.