I think most of what appeared in JFK was verifiable, a few guessed at shots like what David Ferrie (Joe Pesci) and Clay Shaw must have gotten up to in their spare time. Jim Garrison did a lot of good work against the odds.
The event was now some 50 years ago, although it is still a 'modern' event, and in some ways technology has not moved on all that much. (And it appears that today's improved technology disturbingly is only useful for fabricating pictorial evidence when necessary.) I'm not particularly obsessed by that case because of time and it's not my country or system of govt or rogue agencies to worry about. The implications for govts around the world are still disturbing however. Meanwhile, in South Vietnam, the CIA was orchestrating the assassination of the Ngo brothers as they weren't opposing the tide of communism sufficiently to their liking -- although they were difficult times in that region. Apparently assassinations of other world leaders by the US go by accepted and unremarked as the normal conduct of business, but when it's their own it's a big deal, and must be a 'crackpot conspiracy'.
There are just so many books and analyses out there. Just stumbling on various items looking for the elusive south west corner pic, and it threw up this fragment of how the media were manipulated at the time -- several outlets had extra footage which 'disappeared' which probably showed the assassins and other evidence:
http://scribblguy.50megs.com/takingof5.htmApparently some 81% of Americans believe it was staged and LHO was a patsy on the balance of probabilities...