@Qingu: Also, as weird, disturbing, and cultish Scientology is, at least their sacred texts don’t command genocide and slavery,
LRH’s Science of Survival does suggest rehabilitating people who fall below a certain level on the Tone Scale (in Scientology the Tone Scale that means a rating of spiritual-emotional well-being) and if that fails to “dispose of them quietly and without sorrow”.
the Church has also set out to “Clear the Planet” and take out all of what they call SP’s or Suppressive Persons.
and at least they’ve never (for example) went on a violent crusade-style war against a rival religion, or led inquisitions,
on the subject of inquisitions, they have an internal secret police called OSA. that deals with threats to the Church from within and without. they have a culture of suspicion and fear. they have a penal colony set up called the RPF for dissenters. all true.
Google OSA, “Clear the Planet”, RPF +Scientology. you can find abundant documentation of everything I have said in this post.
last, while you say “cultish”, Scientology defines how a large scale cult operates. (as opposed to a smaller one on the level of a few dozen people.) other than the entire state of north korea, I can’t think of a better/worse example of one.