A guest house owner suffered a hate crime because of his Hawaiian shirt.
Rich Wilson, 47, claims he was racially abused by a gang of youths because of his colourful top.
Humberside Police are appealing for witnesses to the verbal attack in Hull, East Yorks, at 2am on Tuesday.
Artist Mr Wilson was heading to the Sainsbury store on Princes Avenue when he was approached by the gang on bikes.
Despite having no Asian of African heritage, Mr Wilson was racially abused with one youth calling him a "wannabe P***".
Mr Wilson, who does work with the Afro Caribbean Association, said: "I was heading to Sainbury's to get a bottle of wine and minding my own business.
"There was a gang of four youths hanging round outside and then one ridiculously called me a wannabe P***. I don't even know what that means.
"One of them then rode their bike at me and tried to run me down but I stood my ground. The little scrotes then swore before riding off. I chose not to get involved and react because it simply wasn't worth it.
"I am dark haired and when I have a tan I could possibly be mistaken for someone of foreign extraction but it doesn't really matter as it shouldn't be happening in this day and age. I am sure I was targeted because I was wearing an Hawaiian shirt."
Mr Wilson organised a Unity gathering last summer in the wake of the Brexit vote when there was a spike in racial tension.
He believes there has been another increase in racial abuse and is considering holding another event to promote tolerance.
He said: "I have heard of a few incidents of racial abuse recently. Someone told me there were a group in Princes Avenue brandishing a placard saying 'go home foreigners' and abusing people.
"Hull is no worse than any other city but for some reason there has been a blip and maybe we need to come together again to show that this is just a minority.
"In this City of Culture year we have more foreign visitors and we don't want their trip ruined by a few idiots."
The Unity gathering saw The Garnett Family, of Britain's Got Talent fame, and members of the All For One choir join about 200 people in Queens Gardens. They were there to call for tolerance and demonstrate against racism following the fallout from the EU referendum campaign.
Mr Wilson, who also runs a B&B in west Hull, is also urging people to report all incidents of racial abuse.
He said: "I would encourage people to report anything like this. If they don't then there is no way the police can act on it."
Humberside Police confirmed they are investigating the attack on Mr Wilson.
A spokeswoman said: "We have received a call reporting a 'race hate' incident on Princes Avenue, Hull, which occurred at 2am on Tuesday.
"We are in the very early stages of our investigations into the allegations but would appeal for witnesses."
Last summer the force launched its 'Being You Is Not A Crime - Targeting You Is' campaign urging victims not to suffer in silence.
The campaign, which is still running, was partly in response to the spike in racially aggravated crime after Brexit.
Chief Superintendent Scott Young said hate crime is "deplorable" and will not be tolerated by Humberside Police.
When the campaign was launched he said: "The physical and verbal abuse suffered by victims of hate crime is deplorable and it will not be tolerated in Humberside. I would urge anyone who has experienced it to report it.
"I want to reassure victims that they will be taken seriously and they will be believed. This is not something you just have to put up with."
Anyone with information about the attack on Mr Wilson or who has been the victim of racial abuse themselves should call Humberside Police on 101.