So again no explanation for why Oswald thought he might be killed or arrested on that night or any other night or in the relevant time period.
This is Strawman "Smith's" usual shtick of shifting the burden of proof. His interpretation of the alleged "Walker note" wins unless somebody can prove otherwise.
If there were any doubt about why he thought that might be the case, he TOLD Marina what he had done.
Sure, just like he "told Marina" that he was going to go take a look at Nixon.
And the note is not the only piece of evidence. For example, Oswald also had a photo of Walker's home.
Oswald had it? Really? They found it on Oswald?
But we are told there is nothing to see here. It is all the product of lies, fakery and no logical inferences can be drawn.
Who said anything about lies and fakery, Strawman "Smith"? An unsigned, undated note that says nothing about Walker or killing can be 100% authentic and have nothing to do with Walker or killing.
And the alternative narrative for all this evidence is left to our imagination.
As opposed to
your narrative, which is the product of your imagination. Oops, I mean "logical inference".