Since this is a sort of remembrance post/thread I'll limit my comment to say I remain completely baffled that a obviously smart man like Mr. Lifton, a man who to his credit recognized early on and then openly denounced the abuses of the disgraceful Jim Garrison, could believe what he theorized. I exchanged a handful of posts with him over the years and he was gracious and formal; nothing over the top or ugly, no name calling.
To propose what he did - I'm sure everyone knows his theory - is...well, how can you begin to think that's possible? Based on the flimsiest of evidence he found? He correctly warned about "confirmation bias", something we all fall for. And yet this? It's a mystery.
Anyway, condolences to his friends and family as they and we shuffle on this mortal coil.