Agree ... I'm usually ready to believe the worst when it comes to democ"rat"s ... but this was in the era of "old" democrats ... when they still had a modicum of honor. The pre-Clinton era ...
About Johnson, though, in his autobiography, he stated that his primary concern with the Warren Commission was to bring the investigation to a swift conclusion that the American people would accept (It's been a while since I read it, but I remember being surprised that he listed this, rather than finding the truth as his primary purpose). I also found it curious that he appointed Gerald Ford, who, according to LBJ, had played too many football games without a helmet, to the Commission.
Was LBJ involved? I have no idea. I do believe that if he wasn't he either knew who was or didn't give a d*mn who was.
Hate to disillusion you, but what "honor" did the Kennedys have? JFK was having an affair with Marilyn Monroe, as was his brother Robert Kennedy. And that's only one affair among many for JFK (I don't know as much about RFK). And the father, Joe Kennedy, was having an affair with Gloria Swanson. So many sordid stories, so little time.
Who was the person who came up with the "Camelot" reference to JFK? That was sheer marketing genius, as it has followed him around for decades, even to this day. You can't read an article about the Kennedys without coming across the "Camelot" reference. It puts the Kennedys in the realm of legend. Sheer brilliance, much as I despise it.