Just listened to a 1967 interview with Meagher that I found on YouTube. While more sane than the David Liftons of the world, she was a "patsy" advocate through and through. She doesn't think he ever fired a gun at Walker, Kennedy or Tippit. When asked if critics like her were obligated to explain what actually did go down on 11/22/63, she flatly said "no."
She was right though.
It's not the responsibility of JFK assassination researchers to solve the JFK assassination murder case. I would even go further and argue that researchers shouldn't speculate about "who" the real killers were (if not Oswald). The conspiracy speculation distracts from the fact that there are real holes, sometimes huge holes, in the Lone-nut narrative. It's easy to shoot down bad conspiracy theories but much more difficult to resolve the many problems with the evidence in the JFK assassination.
Objectively, the Warren report was full of holes. Meagher and other first generation Warren report critics did a public service by exposing the holes in what was pretty much a prosecutorial document with little to no exculpatory evidence included in the report. Oswald didn't live to stand trial so if not for the Warren report critics, there would've been no real effort to examine the evidence critically. The news media almost unanimously endorsed the report. It took independent investigators to bring to light all the problems with the evidence which led to other investigations being opened.
As of today, I personally don't know if Oswald was a "patsy" or part of the conspiracy. But I'm about 60-70% convinced that there was a conspiracy based on all the evidence from the JFK assassination that I've observed in my lifetime. Yes, part of me, 30-40%, allows for the possibility that it was Oswald alone in spite of the problems with the evidence and investigations. It's possible even though I don't think it's the most likely truth.
Political types - on the hard right or left - simply can't resist using the assassination to express their grievances with "the government" or some element of it. Even 60 years later they can't. RFK Jr. anyone?
Strange lack of empathy from you given the facts of how his father and uncle were murdered.
It's likely (based on the autopsy and other evidence) that RFK's murder was a conspiracy and possible that JFK's murder was a conspiracy:
Noguchi's autopsy of Robert Kennedy concluded that the fatal shot was fired into the back of Kennedy's head, behind the right ear, from an upward angle, and from a distance of no more than 0.5 to 3 inches (15–75 mm) away. Such a finding has given rise to conspiracy theories regarding the assassination, as no witnesses reported seeing the convicted assassin, Sirhan Sirhan, any closer to Kennedy than 1 meter away and in a position to fire such a shot. Noguchi himself points out in his memoir Coroner that he has never officially ruled that Sirhan fired the fatal shot.https://en.wikipedia.org/wiki/Thomas_NoguchiIf you're convinced that your dad was murdered in a conspiracy that potentially involved the CIA, it wouldn't take a huge leap to conclude that your uncle was murdered in a similar manner.
Even if you disagree with RFK Jr, you should be able to express empathy towards him on this issue given the tragedies that he experienced.