Elon Musk's grandfather, the late Joshua Haldeman, spent his time ranting about minority groups he didn't like, speculating about a global conspiracy led by shadowy figures (read: Jewish people), and joining the cause of technocracy.
According to a deep dive from the Atlantic on the life of Haldeman, the Canadian chiropractor was a "radical conspiracy theorist" who spent the beginning of his career as part of a group known as "Technocracy Incorporated."
The movement had a bizarre set of principles: They believed that the world should be run by a totalitarian regime of engineers and scientists based in North America; that these tech overlords would solve all of society's problems; and that people only had to work 20 years before retiring.
The party, founded in the 1920s, gained popularity during the Great Depression and at one point had more than half a million members in California.
The organization also referred to people as numbers (apparently, Musk's grandfather was 10450-1) and sometimes added Xs to their names. Followers donned identical gray clothing and cars and greeted each other with special salutes, the Atlantic found. A newspaper cited by the magazine said the group gave off "the tone of an incipient Fascist movement."