I was thinking in larger terms. While the song may have been inspired by 'the day the music died' when Buddy Holly, Big Bopper and...and...Richie Valenzuela and his flying guitar crashed and died, I think that was more of a symbol for, like the song says, Bye, Bye Miss American Pie (America).
The fall of what was America. Look at the lyrics again and see if you don't make that connection. Some very interesting lyrics in there. I'd love to do a whole seminar on this with weirdos like you and me and the rest of the FReeQs sitting in.
Anyway, something to think about. Or not.
p.s. Too bad Holly didn't give up his seat. We could have done without Waylon, Big Bopper, and Valens (barely).
But Buddy Holly was genius and had tons of songs left in him. He was one of my very faves.

I beg to differ, sir.
I agree with you that the potential fall of America is the context of the song.
However, the line “Do you recall what was revealed” points to content rather than context. That is, it asks for something specific.
Was McLean was thinking of the cabal and their satanic rituals when he wrote that line? At first I thought he probably wasn’t.
But...he would probably have been aware of JFK’s Secret Society speech. And he likely put careful and extensive thought into the whole scenario of what Waylon did.