Muslim Council of Britain says action is 'clearest endorsement yet from the US president of the far-right.

U.S. President Donald Trump’s official Twitter account retweeted a series of inflammatory anti-Muslim videos originally posted by the deputy leader of a fringe British far-right group on Wednesday.

The three videos were previously tweeted by Britain First deputy leader Jayda Fransen, who was convicted by a U.K. court in November 2016 of religiously aggravated harassment.

The videos were automatically tweeted and retweeted by at least three accounts associated with the group.

Britain First is well known in the U.K. for anti-Islamic outbursts, anti-mosque protests plus street and online provocations.

It has carried out so-called “Christian patrols” in English cities and stormed into mosques.

A tweet on Fransen’s account later acknowledged the Trump retweets, adding: “GOD BLESS YOU TRUMP! GOD BLESS AMERICA!”

The Muslim Council of Britain (MCB) reacted to the retweets, calling them the “clearest endorsement yet from the U.S. president of the far-right and their vile anti-Muslim propaganda”.

“We hope our Prime Minister and Home Secretary will distance the U.K. from Mr Trump and his comments, and will reiterate the government’s abhorrence to all forms of extremism,” the MCB said in a statement.

Tell MAMA, a group which registers anti-Muslim crimes in the U.K., also reacted to the online action.

"We are utterly appalled that the President of the United States would retweet Jayda Fransen of far-right group Britain First," Tell MAMA said.

"Today shows how far extremism has moved mainstream," the group added.

A member of the British parliament, Caroline Lucas, accused Trump of retweeting a “convicted British fascist” and called on Prime Minister Theresa May to condemn the posts.