Britain First is a far-right, anti-immigrant political party in the U.K. The fringe group is known for spreading hoaxes about Islam , conducting aggressive mosque invasions of Muslim worship spaces and campaigning for an outright ban on Islam in their country.

And on Wednesday, U.S. President Donald Trump helped amplify the groups extremist message .

Trump retweeted a series of three overtly Islamophobic videos posted by Britain First s deputy leader, Jayda Fransen. The videos purported to show Muslims committing violent and anti-Christian acts. One is called Muslim migrant beats up Dutch boy on crutches, another is called Muslim destroys a statue of Virgin Mary and the third is called Islamist mob pushes teenage boy off roof and beats him to death!

The legitimacy of the videos hasnt been verified, but the Embassy of the Netherlands in the United States has already offered a correction regarding the first one. That clip originally appeared online months ago, and at the time, it was reported that the attacker didnt appear to be a Muslim or an immigrant . On Wednesday, the embassy confirmed in a tweet that the attacker was born and raised in the Netherlands, and that he has already received and completed a sentence under Dutch law.

The second video was reportedly taken in Syria in 2013 and shows a man belonging to the al Qaeda affiliate al-Nusra. The third video reportedly shows a mob of Muslim Brotherhood supporters in Egypt throwing teens from a rooftop in 2013. It was apparently taken during the political unrest that followed the ouster of President Mohammed Morsi.

Spreading misinformation about Muslims, and conflating political extremism with Islams spiritual tenets, is Britain Firsts bread and butter and the fact that Trump is amplifying one of the groups leaders has raised concerns on both sides of the pond.