At the end of one of the 2 hour analysis of JFK's demise, was an obvious and almost comical admonition to never look into this event. You will have mental problems. You will have all sorts of trouble. Let it rest. Etc..
They of course took the position that Oswald acted alone. signed, sealed, and delivered as a fact only hours after the assassination.
One glaring proof of conspiracy [among many] was pictures that Dallas Police Office White had , and found upon his death.
They were the alternate and not so good forgeries of Oswald holding his weapons. You know, the one with the pasted on head with the shadows going in the wrong direction?