The Ásatrú faith is Iceland's fastest growing religion. Drawing on Norse mythology, it is a pagan faith open to all. But in recent years it has been hijacked by white supremacists in other countries. We follow High Priest, Hilmar Hilmarsson, as he attempts to tackle this critical challenge and protect his faith’s true origins. When white supremacists marched through Charlottesville in 2017, Hilmar looked on from Reykjavik. It was not just their racist message that worried him. It was the fact their banners bore the symbols of his faith such as Thor's hammer. Ásatrú, according to Hilmar, emphasises respect and tolerance, reviving polytheistic traditions and the worship of gods and goddesses from Iceland’s pre-Christian past. Thanks to his position and the fact he has become so well respected both inside and beyond Iceland, Hilmar has an authority recognised by the Icelandic state to conduct weddings and funerals and lead the rituals or "blots" that the group practise to mark the passing year - a 21st Century reimagining of how pre-Christian Norse people celebrated their seasons. We join him as the community gather around him and prepare for the welcoming of the winter blot. But Hilmar has also received disturbing messages and even death threats from far- right pagans in the US, Germany and Canada who do not agree with his inclusive belief system and his support for gay marriage and LGBTQ rights. We follow him as he looks forward to the opening of the group’s first temple while under pressure to distance the religion from white supremacy. Producer: Sarah Cuddon A Falling Tree production for BBC World Service (Photo: High Priest Hilmar Hilmarsson. Credit: Gavin Haines)