If you were a good judge, even without my pointing it out, you would look at the core statement here: “One of the recent documents shows Democrat President Lyndon Johnson was a KKK member.”
Upon review, you would see the documents make no such proof, only that some unnamed guy said some unnamed guy said the Klan could prove LBJ had been a member.
That is far from proof.
For example, if I published a paper that said some guy told me that some guy said the DNC said your were really an Anfifa member, would you consider that proof?
I think I would note there’s a difference between “shows” and “proves,” and would maintain, possibly keeping it to myself, a curiosity about your inclinations.