They certainly seem to be able to control SOME minds...though by no means all. It isn't that they have such vast telepathic power...it is that humans are programmed from childhood up to obey authority...parents, teachers, police, and so on.
The consequence is that they have very little ability to RESIST control...especially when the attempt is as intimate as a telepathic contact.
The answer to the problem, then, is to strengthen your own WILL
MOST people, though, don't have a will...they are vacillating creatures influenced by the last commercial they saw or the last talk show host they heard or the last book they read.
How can they HOPE then, to resist the "Greys" or anyone else?
Well, there are exercises for that. Gurdjieff is good on the subject. One might begin by reading Ouspensky's IN SEARCH OF THE MIRACULOUS you can download a free (pdf) copy from my skydrive if you don't have it in your library:https://skydrive.live.com/?cid=933f5a04 ... 05%2130020