For example: Oswald, with apparent communist sympathies and ties to Cuba (on the face of it), shoots the President. LBJ sees the communist/Castro connections, fears public opinion demanind war with Cuba and Russia as word gets out. So he enlists Chief Justice Warren and a panel of respected officials to conduct an investigation and write a report pinning the deed on Lee Harvey Oswald.
So you contention is that Oswald shot Kennedy and then the evil government "pinned" the crime on him?
Worst.
Conspiracy.
Ever.
Without not one sole thinking “Now why did” XXXX “say do this” when protocol says this “zzz”
Sorry . Real life doen’t work like that. Doesn’t fly outside of the movies....
Occam’s Razor....