This isn't even close to where our conversation was heading. You simply keep trying to take it there so you can bitch and holler (again) about burden of proof.
Well then by all means explain how it is the least bit relevant whether or not anybody can name a witness who said Oswald was NOT the cop-killer without committing a shifting the burden of proof fallacy.
Well then, what are you waiting on?
Already asked and answered multiple times throughout the course of this forum. You're ignoring or discounting statements made by Acquilla Clemons, Frank Wright, Doris Holan and Margie Higgins for starters. Hell, you're even ignoring some statements made by Helen Markham, Domingo Benavides, T.F. Bowley, and Barbara and Virigina Davis when it suits you.