Aleister Crowley was, apparently, a British Intelligence asset (http://www.davesweb.cnchost.com/nwsltr100.html). Intell agencies seem to use occult groups as a cover.
"...One of the points that we've tried to make, throughout the course
of our discussion of *The Ultimate Evil*, is that, again, the
*Satanism* is one of the things that throws people off. The
intelligence agencies have *long* used occult groups as a front
for activity. For one thing, occult groups exist at the periphery
of public scrutiny and therefore are ideal to use as intelligence
fronts. In addition to that, because of the unusual activities of
occult groups, any suspicious activity on the part of an
intelligence agent *using* these groups could be laid simply to
the bizarre nature of the group itself. [CN -- also, first
amendment protections for "religious" freedom would help shield
them from investigation.]
Now specifically, vis a vis mind control, many, many of the cults
on the scene today are, in fact, mind-control fronts for the U.S.
Intelligence and Military communities."
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www.theconspiracy.us/9410/0023.html