Some time ago Joe Rogan thought this joke video[1], showing a Boston Dynamics robot being trained for the military which goes rogue and attacks his human handlers when they try to have it shoot a robotic dog, was real. He was talking to Lex Friedman about how the video tricked him, but that the scary thing was how close the video was to reality. Friedman tried to explain to him how things that seem human like, such as the movement that the actual Boston Dynamics robots make, doesn't mean they're anywhere close to actually thinking like a human.

The thing is, when someone is outside of a field, it's easy to misunderstand things and assume a capability that's not there. If you've never dealt with the CIA or FBI, it's easy to imagine that they're some all powerful organization that's able to kill off any politician they like at a moments notice with no scrutiny and silence anyone who even raises any questions. If you are familiar with the organizations, this point of view is as naive as someone who says, "Oh, you program? I came up with the idea for a game where the player can do anything they want and AIs will just generate the content for them. You think you can program that?"

And the issue with conspiracy theories is that any fact that gets presented just gets funneled into the preffered hypothesis. For instance, you mention "Oswald was killed before he could speak." But that's not true, he was answering questions from reporters before he was shot[2]. And the guy who killed him, Jack Ruby, wasn't. So supposedly these powerful agencies want him dead so he won't tell anyone what happened, but instead of shooting him when they find him and saying he was resisting arrest, they arrest him alive, let him talk to reporters, hire an unhinged local criminal to kill him, and then let the unhinged guy they hired live and don't worry about him talking? The more you look at the details of what actually happened, the less they support the conspiracy theory.

[1] https://www.youtube.com/watch?v=y3RIHnK0_NE&vl=en [2] https://books.google.com/books?id=_kmVEAAAQBAJ&pg=PT10648&lp...