We are slowly and carefully teaching the unholy a lesson. It is as follows: "We are not a law enforcement agency. BUT we will become interested in the crimes of people who seek to stop us. If you oppose Scientology we promptly look up—and will find and expose your crimes. If you leave us alone we will leave you alone." It's very simple. Even a fool can grasp that. And don't underrate our ability to carry it out.
— L. Ron Hubbard HCOB 05 November 1967 Critics of Scientology
Suppressive Person Doctrine