Scientology has been attacking alt.religion.scientology since January of 1995. They have attempted to drown out the newsgroup by spamming (multiple posts of dubious appropriateness) a.r.s. into unusability. There is evidence that the church has planned such an attack for some time. Check out this post, and this 2nd post, and this 3rd post, and this 4th post.
Helena Kobrin's rmgroup of a.r.s.
Thomas Small's email to anonymous remailers asking them to drop a.r.s.
Jim Lippard and Jeff Jacobsen's story on Scientology's internet activities, 1995.