You mention Stalin. Stalin was an authority. Which is a more reliable guide to truth: authority or evidence? Which is more reliable evidence: witness or replicable experiment?
This isn't hard. Infering something does not make it true, at best it makes the inference a possibility. The mere notion of the possibility does not make it fact. Yet this is exactly what you are trying to pull - the bunch of you. Lee H. Oswald didn't act alone. The evidence is there to support it, so I infer it. That alone doesn't make it true. How you can't see that is beyond me save that God has truly blinded you so that you'll believe your own lies. You can't otherwise be that stupid.