"the artwork showed people wearing mask....Anyway, my thought later was this was a sort of preprogramming...( like they knew in advance what was coming )"
I dont know if there was such a picture or not. But I find it interesting how conspiracy theorist's often (always in hindsight) find that those orchestrating the conspiracy are always kind enough to publish hidden clues to their agenda.
"Alright Gentleman, our secret plot is now in place. Only one detail remains. Who is in charge of placing the hidden clues of our diabolical scheme throughout various media? Oh, it's Jim? Excellent!" - followed by maniacal laughter and twirling of mustaches.