Is there an official sourcebook for the new World of Darkness (not any of the core rulebooks) that goes into more detail on how humanity remains or is kept ignorant of all the supernatural phenomena that surrounds it? (How is the general "Masquerade" — not just that of the Vampires — held up?) All of the core books deal with this, but I find the reasoning… lacking somewhat, hence why I'm looking for sources beyond the core rulebooks.
If not, is there any widely accepted and recommended unofficial material? (Perhaps some "actual play" thread that concerns itself primarily with this aspect of the nWoD?)