Board of Deputies Vice President Marie van der Zyl has condemned President Donald Trump’s retweets of videos posted by Britain First Deputy Leader Jayda Fransen.
The media storm follows Trump’s Twitter account retweeting a trio of inflammatory videos from the British far-right group allegedly showing Muslims committing hate crimes.
The first tweet from Fransen claims to show a Muslim migrant attacking a man on crutches.
Two further videos of people Ms Fransen claims to be Muslim follow.
“It is of grave concern that the President of the United States would retweet videos from the deputy leader of Britain First,” said Ms van der Zyl.
“They are a nasty far-right group which seeks to intimidate minorities, especially Muslims.
“We call on the President to delete the tweets and make clear his opposition to all sorts of racism and hatred.”
The Muslim Council for Britain called on the Prime Minister Theresa May’s government to “distance” itself from the comments.
“This is the clearest endorsement yet from the US president of the far-right and their vile anti-Muslim propaganda,” a spokeswoman said.
US conservative commentator Ann Coulter, who Mr Trump follows, shared the original video.
Ms Fransen has over 50,000 followers on Twitter.
She responded with glee, posting: “Donald Trump himself has retweeted these videos and has around 44 million followers!”
“God bless you Trump! God bless America!” she added.
The 31-year-old deputy leader was arrested by Police Service of Northern Ireland in London on Saturday charged with using “threatening, abusive or insulting words or behaviour” at a Northern Ireland Against Terrorism rally at Belfast City Hall in August.
Ms Fransen will appear at Belfast Magistrates’ Court in December.
Former members of the British National Party founded Britain First in 2011.
The far-right group has made inroads on social media with provocative posts contending “the Islamification of the UK”.
Members failed to secure seats at European elections and by-elections on anti-immigration and anti-abortion policies.
But the group did gain a 1.2% vote at the latest London mayoral elections.