THREE men were punched and one left unconscious after a disagreement at Brighton Pride.
The men and a woman were sat on grass near to the Hog Roast vans in the park when two men started to urinate close by.
When the group asked the pair to use the toilets, they became aggressive and a fight broke out.
The incident happened at 4.50pm on Saturday in Preston Park.
One of the victims, a 44-year-old man, was punched in the face and knocked out. The other two victims, a 32-year-old man and a 43-year-old man, attempted to stop the suspects and were assaulted in the process.
During this incident, the suspects are described as using racial and homophobic abuse towards two of the victims. All three were treated at the scene by St John Ambulance staff suffering from cuts and bruises.
Detective constable Chris Bishop of Sussex Police said: "The two suspects are described as being white men in their 20's or 30's with Irish accents. One of them was topless and had tattoos on his body and the other was wearing a blue vest top.
"This type of behaviour is completely unacceptable and we are appealing to anyone with information or saw what happened to speak to us on 101 or email firstname.lastname@example.org quoting 1901 of August 2."