A NURSE in Belfast has described how he was told to "Get the f*** out of our country" following the Brexit vote.
And racist graffiti including a swastika symbol has also been daubed on the door of a house in Co Armagh.
It comes amid concerns of a rise in hate crime in Britain in the wake of the referendum vote to leave the European Union.
The PSNI said there have been "no major spikes" in reports in Northern Ireland but it is "monitoring the situation closely".
Mohammed Samaana said on Tuesday that he suffered racial abuse on Saturday night at a bar in Belfast city centre.
The 41-year-old is a dual Palestinian-UK citizen who has lived in Northern Ireland for 15 years and works as a nurse in a Belfast hospital.
"On Saturday night, a man I have never met before said to me: 'You from the EU? F**k off back to your country. Get the f**k out of our country,'" he said.
"At first I thought he was joking, but then he continued the abuse and started shaking his fists at me. At that point I decided it was better to leave rather than have the incident escalate."
Mr Samaana, a member of Amnesty International's Belfast group, intends to report the incident to police.
"What makes me really sad is that the three men and three women who were with him didn't say a word, condoning his racism by their silence," he said.
Meanwhile, racist graffiti including a swastika symbol has been daubed on the door of a house in Armagh.
Another door was sprayed with 'C18', representing the hardline neo-Nazi organisation Combat 18, while two cars were also damaged.
It happened some time between 6pm on Saturday and noon on Sunday in the Orangefield area.
Police said they were treating the attack as a hate crime, although it has not been directly linked to the Brexit vote.
Green Party MLA Clare Bailey also said she had heard of several racist incidents in south Belfast in recent days, including "people getting spat at while waiting for a bus".
Mr Samaana spoke out as Amnesty yesterday launched a new campaign to combat racism and xenophobia amid fears of post-Brexit abuse.
Amnesty's Patrick Corrigan called for more to be done to "stand against hate".
Police in Britain are on heightened alert for a spike in hate crime following last week's referendum vote.
Responding to concerns in Northern Ireland, PSNI Superintendent Paula Hilman said: "Whilst there have been no major spikes in racist hate crime reported over the past week, the incidents reported in England following the EU referendum are obviously of some concern.
"We are aware of an increase in reports of hate crime incidents to True Vision, the police online hate crime reporting site for Northern Ireland, England and Wales. This is similar to the trends following other major national or international events and we are monitoring the situation closely.
"There is absolutely no place in Northern Ireland for intimidation or threats. It is wrong on all levels and the PSNI will do everything it can to ensure that everyone, from whatever background, can live free from prejudice, fear and discrimination."