"...followers of Crowley"
Well, that would certainly explain it!
Yes, and their "cross" is the one Crowley invented, or inverted
Aleister Crowley, who openly supported the National Socialists, was affiliated with Ordo Templi Orientis, A.A. (Order of the Silver Star) and other such occult lodges all across Germany. Crowley engaged in all manner of deviancy, homoeroticism, sadomasochism and murder.
Much of the occultism in National Socialism is derived directly from there. Crowley envisioned himself as the Great Beast (To Mega Therion), just as der Fuhrer made himself in that image. Hitler's life as a struggling, inept artist was where that association blossomed.
Crowley's creed, “Do what thou wilt, shall be the whole of the Law,” (which is actually from Francois Rabelais) and used by Neo-Pagan nutcases without attribution for obvious politically correct reasons, is with certainty no different than the National Socialist “will to power,” or their ubermensch mentality.
It is also no accident Nietzsche's “over-man” and nihilist philosophy and resulting insanity from venereal disease closely mirrors the insanity of der Fuhrer.
These occult orders, sex and drug cults still survive today, as do the Neo-pagan, Neo-Nazi groups, black supremacist Rastafarian potheads, prison gangs and other related filth.
Crowley occultism is also from where L. Ron Hubbard emerges with Scientology. Note the NAZI symbolism of that kooky cult of weirdos and their deviant adherents who advocate homoeroticism and other perversions. Hollywood Cultural Marxists love Scientology.
Germany cracked down hard on the Scientologists for that reason and because they are using similiar mind control tecniques...