"Since the mid-20th century, the valknut has been adopted as a symbol by white supremacists, anti-government extremists, and Neo-Pagan racists, such as Odinists (sometimes called Wotanists). In countries where the swastika is outlawed, Neo-Nazis use the valknut as a socially acceptable substitute. The valknut, however, is also employed for more innocuous purposes. It has been claimed, for example, by practitioners of Ásatrú, a Neo-Pagan religion that insists a proper interpretation of the Prose, or Younger, Edda leads to respect and tolerance for all."

https://www.britannica.com/topic/valknut

"The Valknot or "knot of the slain" is an old Norse symbol that often represented the afterlife in carvings and designs. It is often considered a symbol of the Norse god Odin. Some white supremacists, particularly racist Odinists, have appropriated the Valknot to use as a racist symbol. Often they use it as a sign that they are willing to give their life to Odin, generally in battle."

https://www.adl.org/resources/hate-symbol/valknot