quasi-religious cult theme

The practices religious cults, or something much like them, are featured.

Examples

The Children of Landru in tos1x22 "The Return of the Archons" Landru lead a cult-like following.

20 total · 3 choice · 9 major · 8 minor

StoryLevelMotivation
ahh2x27 choice Members of Satanic cult were out to kill Karl Jorla, an apostate of their order turned horror movie actor. The cult members were shown performing a black mass in the film screened by the studio executive.
ds92x15 choice Alixus was running a little neo-luddist cult. Her followers were not free to leave, conformity of thought was demanded, and people who behaved badly were put in the punishment box.
ds97x09 choice Dukat led the Pah'wraith religious cult
movie: Alien Nation: Millennium (1996) major Two con artists started a cult with the goal of swindling their followers out of all their money.
movie: Mad Max: Fury Road (2015) major The story followed a group of women escaping from cult leader Immortan Joe. Immortal Joe also had a band of fanatical followers.
movie: Mysterious Two (1982) major Two aliens that went by the names of He and She came to Earth and started a weird cult.
movie: RoboCop 2 (1990) major Cain was the leader of a drug dealing cult-like gang.
movie: Spider-Man (1977) major Byron was running some kind of New Age, self-improvement oriented cult as a cover for his criminal operations.
movie: The Chronicles of Riddick (2004) major Much was made of the Necromongers being a cult of religious fanatics who were going around the universe forcing people to convert to their religion or else be put to the sword.
movie: The Omega Man (1971) major There was a neo-luddist cult of nocturnal, albino mutants.