For the past three years, a mysterious figure calling himself Horus the Avenger has operated White Rabbit Radio, an online community of racists dedicated to spreading a message called the “Mantra” far and wide.

Written by a curmudgeonly segregationist with a history of drug abuse named Robert Whitaker, the 221-word Mantra is an attack on multiculturalism. “Anti-racist is code word for anti-white,” the Mantra reads in part.

Its widespread presence on the Internet is due to a small but highly dedicated group of activists who call themselves the “swarm” and furiously propagate it online. In essence, they comprise an online flash mob, spending hours posting the Mantra in the comments section of YouTube videos, tagging it to news articles on race, and reprinting the Mantra in full on most white nationalist websites of note.

But until now, little was known about the energetic propagandists known as Horus. He has had no known membership in any racist group and has gone to great lengths to hide his identity. In his first podcast, in 2009, he boasted, “You don’t know who I am. You’re never going to know.”

That ended in June when a lengthy investigation by Hatewatch uncovered the identity of Horus the Avenger.

His real name is Timothy Gallaher Murdock, 43, of Dearborn Heights, Mich., though he sometimes appears online and in radio interviews as Tom Worth. An avowed anti-Semite and one-time day trader, he is single and lives in the basement of his parents’ home, where, he says, he cares for his terminally ill mother and dedicates his time to building up “Horus the Avenger’s Follow the White Rabbit,” an online allegory designed to expose “white genocide” and patterned after Lewis Carroll’s Alice’s Adventures in Wonderland.

The basic idea of the Mantra and its proponents — that white people, far from ruling most of the developed world, are actually being subjected to a genocide that will ultimately wipe out their race — is not new. It has been developing since the racist right essentially lost the civil rights battles of the 1960s, and racist writers like Wilmot Robertson began adopting the language of the civil rights movement to depict whites as increasingly “dispossessed.” In the last 20 years, the idea that the white race is facing mortal attack has become the norm on the extreme right, with the neo-Nazi National Alliance, for instance, repeatedly describing whites as “Earth’s Most Endangered Species.” Such fears have picked up speed in recent years thanks in large part to the U.S. Census Bureau, which has predicted that non-Hispanic whites in this country will lose their majority by about 2043.

But Murdock, Whitaker and the “swarm” of their enthusiasts have reduced their message of fear to a few sentences and sent it out to the world.

Over several hours of cordial interviews with Hatewatch, Murdock acknowledged his identity and expounded at great length about the Mantra, how he entered the radical right and what he hopes to achieve.

“What I am is a provocateur,” Murdock said. “My job is to provoke a conversation using the very charged concept of white genocide to create a paradigm change. I’m not interested in creating a national socialist state.” He added, “I’m doing things intentionally to provoke a reaction.”

And provoke a reaction he has. Since Murdock’s appearance in the movement, lines from the Mantra have proliferated across the racist right. His website features a subscription podcast called Endgame Exotica that provides commentary on the news, as well as a host of animated cartoon shorts to point out the so-called contradictions of multiculturalism. He has also become a galvanizing figure in the movement. He appeared last year at the Practical Politics Seminar conference hosted by Stormfront, the largest white supremacist online forum, where he talked about controlling the message about race. And his allegiances in that message management lie undoubtedly with the Mantra and Whitaker, his partner in the messaging effort. “I’ve always been interested in Bob’s particular writings,” Murdock said. “I think he’s the future.”

More: White Rabbit Radio, Font of Racist Genocide Claims, Run by Michiganer