"The New Zealand variant of this involved Glen Campbell asking any JWs present at his NZ concerts to stand up and then ordering them to leave. "
Steve this one is urban legend is particularly amusing to me. You see in the United states it was widely reported that Glen Campbell was a Jehovah's Witness. I remember this well, because my mother was a big fan of his music. As a matter of fact , This was such a prevalent rumor that James Penton referenced it on page 367 of his book Apocalypse Delayed: The Story of Jehovah's Witnesses.
"For example, it was long claimed inaccurately that American singing star Glen Campbell was a Witness, and some went so far as too state that they had seen him at district conventions."
Jehovah's Witnesses can't even come to a consensus as to whom to embrace versus whom to vilify.