Morningstar w_ Fetzer on Starting the Zapruder Alteration Debate with Groden in Chicago 1992-93

Confirmed in Best Evidence Lifton doesn't mention it, so it looks like Harry Livingstone was first to call out the fake. Morningstar brought it to debate with the JFK conspiracy orthodoxy in 1992-93 he says, a few years after .
Full vid-
https://www.youtube.com/watch?v=oTooLFeaq3Y
clips from it coming on the Other Z & on Tippit.
Part 2-
https://www.youtube.com/watch?v=fHd6xRq8lO4
ore Z history otw.
Interesting description of Groden's response, he responded to/tried to debunk every single point. That sure isn't what he's doing today.