The Keystone cops like incompetence and disarray in the investigation is proof of a conspiracy. And Katzenbach's memo ordering and directing the scripted investigation is also proof of a conspiracy.
So, if the investigation was incompetent and confused and muddled that's proof of a conspiracy. But if the investigation is controlled/directed (by Katzenbach?) and scripted out that's proof of a conspiracy too. Up is down and down is up.
Katzenbach was Mr. Big? He directed/controlled the investigations? Over 60 years? Who believes Earl Warren or Hoover or followup investigations could be controlled by Katzenbach? And the news media? Katzenbach controlled them too?
Conspiracists have said LBJ controlled the investigation. No, it was Hoover. No, Dulles. No, Angleton. No, Katzenbach. Sixty years of this gibberish, of made up stuff. The Seymour Hersh account always comes to mind. He told Oliver Stone that the CIA killed JFK theory was nonsense, it didn't happen. What was Stone's response to Hersh? "I always knew you were CIA."
Anyway, here's the Katzenbach memo: Opening paragraph.
"It is important that all of the facts surrounding President Kennedy's Assassination be made public in a way which will satisfy people in the United States that all the facts have been told and that a statement to this effect be made now."
Full memo:
https://www.maryferrell.org/showDoc.html?docId=62268#relPageId=29