Yes, I believe that a conspiracy was afoot but I also believe that NONE of the current fanatical crap out there comes remotely close to what actually happened, by whom and why. I believe that Oswald was a patsy tied to the project but again, there's a hell of a lot more to the story that's never been told and will probably never become much in way of public knowledge anytime in the next 100 years or so when it's too late. . .
I'm certain there was a conspiracy to kill Bobby that is indirectly connected to John's death and directly the reason why Ted never tried to make a serious go for it after his first miserable mention and the whole ordeal over that aquatic car. . .
I also believe that Martin King's death is part of this same situation and that the current attempt of the Good Ole Boy's club to discredit Obama by superimposing Bush blank onto him, is likewise a link to a very long reaching campaign by which to keep certain chief family's in control . . . and do note how I said this, we're not talking about publicly recognized entities so much (and please, leave your Free Mason/Illuminati horse crap at the door), but simply older "Ivy League" bloodlines who've always been at the helm. . . or at least since the end of WWI if not longer.
I'll not go into conversation on this in that it's just a matter of theory shared by a handful of folks who've "tinkered" with investigation into these and other such conspiracy scenarios and started seeing indication of "other influences" including a big chunk of misdirection (which is where the Free Mason/Illuminati stuff actually serves a role . . . or so our theory suggests).
Do you hear Twilight Zone music?