We keep hearing that "all the evidence" points to Oswald and that CTers and those like me who are at least open-minded never present any "evidence" for their positions.
Realistically, what evidence would be EXPECTED?
I've indicated openness to a Mafia conspiracy. Trafficante's lawyer said he confessed. An inmate who was an FBI informant said Marcello confessed. Maybe both are bogus, maybe not. There are other "hints and allegations" (as the saying goes) that suggest Mafia involvement. (Forget Ruby - the Mafia wouldn't have cared if Oswald lived or died, and they sure as hell wouldn't have recruited a red-flag loose cannon like Ruby.)
Precisely what evidence would we EXPECT if the JFKA were a Mafia hit? (You can, of course, ask this about any conspiracy theory.)
In terms of the mechanics of it, the JFKA would have been just another Mafia hit. No big deal, business as usual. The actual gunman, a pro, would have been in and out of the Dal-Tex building (or wherever) as seamlessly as Joe the accountant. If Oswald were a Mafia patsy - a role for which he would have been almost too good to be true - then OF COURSE the evidence would point to him to the maximum extent possible.
So, barring some absolutely bombshell piece of evidence that comes to light, we are limited to: (1) the Trafficante and Marcello hearsay and other evidence that is largely hearsay or completely apocryphal (e.g., the mysterious Robert E. Morgan who ostensibly found a shell while working on the roof of the County Records building); (2) the kinds of questions that I and others have raised about Oswald that just don't seem to fit the LN narrative or the profile of a Presidential assassin; and (3) the questions raised by the Dealey Plaza evidence itself.
In a sane conspiracy (i.e., a Mafia conspiracy) with Oswald as a patsy, there would have been one and only one pro in or on a building to the rear of the limousine who would be firing on a trajectory plausibly attributable to Oswald, using either ammunition that would completely fragment or a sabot with a 6.5 bullet. The LN narrative posits a last-resort theory called the SBT ... and not just that, but an SBT with a Magic Bullet that survived almost pristinely intact ... and not just that, but a Magic Bullet that left holes in JFK's clothing and body that force the claim that "his clothes must have been bunched" ... and not only that, but a victim, JBC, who pretty much insisted the SBT was incorrect ... and not only that, but a Magic Bullet whose provenance is uncertain at best ... and not only that, but a Magic Bullet that Landis claimed he found on the back seat of the limo! And yet this is the evidence, we are told, that leaves no room for doubt and seals Oswald's fate as the Lone Nut.
Evangelical Christians do the same thing with the Resurrection: they insist all the evidence shows it occurred as a real-world event you could have videotaped if you'd been there. Well, of course they say this; it's the linchpin of the entire faith. But when you approach it in the same way that I suggest the LN narrative should be approached, you realize it is entirely an article of faith and that the evidence and reasonable inferences are nowhere near as solid as the True Believers claim. Can anyone produce evidence it didn't happen, the True Believers ask? Barring a definitive discovery of the bones of Jesus, no - but we can critically examine what evidence there is, draw reasonable inferences, and decide which understanding of the event seems most plausible.
Someone tell me: If the JFKA were a tight, compartmentalized Mafia hit with Oswald as a patsy, what affirmative evidence would you expect there to be? It really seems to me that the demand for affirmative evidence is largely a red herring.
(What there is NOT, I will admit - at least so far - is anything that would plausibly tie Oswald to anyone connected to the Mafia. This is the elephant in the room with the Mafia theory. Dutz Murret - as I believe John Orr suggests - is possible but seems far-fetched to me. To be an effective patsy, Oswald would have had to believe he was part of a pro-Castro assassination and been completely oblivious to Mafia involvement.)