[8] Former lead vocalist Nazgul von Armageddon was alleged to have expressed Nazi views in his solo project Satanic Warmaster.

In 2005, founder Shatraug accused Nazgul of being "the Nazi in our ranks" and the band's website in 2007 declared that "[w]hat any ex-members might represent is not what we stand for.

[9] In 2010, Horna concerts in Germany and Austria were cancelled because of allegations that the band was involved with NSBM.

[11][12] On their 2019 American tour, Horna shows in New York City, Denver, Portland and Oakland were canceled after MetalSucks posted an article highlighting the band's connection to NSBM artists.

[13] During the tour in Houston, members of the far-right extremist group Atomwaffen Division were seen doing Nazi salutes in the crowd during Horna's performance.