

McNallen is a controversial figure in the Heathen and wider Pagan community. In the 21st century he became more politically active, becoming involved in both environmentalist campaigns and white nationalist groups linked to the alt-right movement. He brought greater attention to his group after they became involved in the debate surrounding the Kennewick Man, arguing that it constituted evidence for a European presence in prehistoric America. In 1997 he was involved in the establishment of the International Asatru/Odinist Alliance alongside Valgard Murray's Ásatrú Alliance and the British Odinic Rite. Concerned by what he saw as the growth of liberal, universalist ideas in Heathenry, he returned to active involvement in the Heathen movement in the mid-1990s, establishing the Asatrú Folk Assembly, which was headquartered in Grass Valley, California. Moving to Northern California, McNallen began a career as a school teacher during the summer vacations he travelled the world as a, writing articles for Soldier of Fortune magazine.

Under increasing personal strain, in 1987 he disbanded the Assembly. A growing membership generated internal conflict within the AFA, resulting in McNallen's decision to expel those with neo-Nazi and racial extremist views from the organisation. He espoused the belief, which he named "metagenetics", that religions are connected to genetic inheritance, thus arguing that Heathenry was only suitable for those of Northern European ancestry. After spending four years in the United States Army, he transformed the Viking Brotherhood into the Asatrú Free Assembly (AFA), through which he promoted Heathenry within the American Pagan community. In 1969–70 he founded the Viking Brotherhood, through which he printed a newsletter, The Runestone, to promote a form of Heathenry that he called "Asatru". Born in Breckenridge, Texas, McNallen developed an interest in pre-Christian Scandinavia while in college. He founded the Asatru Folk Assembly (AFA), which he led from 1994 until 2016, having previously been the founder of the Viking Brotherhood and the Asatrú Free Assembly.

Stephen Anthony McNallen (born October 15, 1948) is an American proponent of Heathenry, a modern Pagan new religious movement, and a white nationalist activist.

Nació el 15 de octubre de 1948 en Breckenridge, Texas, McNallen ha estado involucrado en el movimiento Ásatrú desde la década de los 70. McNallen (nacido el 15 de octubre de 1948) es un influyente líder y escritor neopagano.
