Donald Trump has shared videos tweeted by the deputy leader of far-right group Britain First purporting to show Muslims committing crimes.
The US President retweeted three posts by Jayda Fransen today.
The posts included unverified videos titled "Muslim Destroys a Statue of Virgin Mary!" and "Muslim migrant beats up Dutch boy on crutches!"
Fransen, 31, from Penge, south-east London, England, is on bail facing four charges of causing religiously aggravated harassment as part of a Kent Police investigation into the distribution of leaflets and the posting of online videos during a trial held at Canterbury Crown Court in May.
She will also appear in court in Northern Ireland in December charged with using threatening and abusive language in connection with a speech she made at an anti-terrorism demonstration in Belfast on August 6.
Mr Trump, who is known for his unguarded messages on social media, has 43.6 million followers on Twitter.
In June this year, a Press Association analysis found Facebook and Twitter had failed to take down a number of misleading videos posted by Britain First despite them having received hundreds of thousands of views.
Videos posted by the nationalist group often target minority groups, and PA analysis found they consistently posted false claims about the circumstances being shown - including untrue claims that Muslims and migrants had attacked women and police.
The retweets were met with criticism on Twitter.
Brendan Cox, widower of British MP Jo Cox who was murdered by a right-wing extremist, said: "Trump has legitimised the far right in his own country, now he's trying to do it in ours. Spreading hatred has consequences & the President should be ashamed of himself."
Trump has legitimised the far right in his own country, now he’s trying to do it in ours. Spreading hatred has consequences & the President should be ashamed of himself.— Brendan Cox (@MrBrendanCox) November 29, 2017
Paul Joseph Watson, the UK-based editor of far-right conspiracy website Infowars, said: "Yeah, someone might want to tell whoever is running Trump's Twitter account this morning that retweeting Britain First is not great optics."
Yeah, someone might want to tell whoever is running Trump's Twitter account this morning that retweeting Britain First is not great optics. 🤔— Paul Joseph Watson (@PrisonPlanet) November 29, 2017
A tweet from Fransen's account, which is verified by Twitter, appeared to celebrate the retweets.
She said: "THE PRESIDENT OF THE UNITED STATES, DONALD TRUMP, HAS RETWEETED THREE OF DEPUTY LEADER JAYDA FRANSEN'S TWITTER VIDEOS! DONALD TRUMP HIMSELF HAS RETWEETED THESE VIDEOS AND HAS AROUND 44 MILLION FOLLOWERS! GOD BLESS YOU TRUMP! GOD BLESS AMERICA!"