I don't know who shot Kennedy or why, but there are three things I've always wondered about.
One, the absolutely undamaged bulled "found"on the Gurney after they got Kennedy to the hospital. That bullet was never fired from any rifle.
Second, you don't shoot a Dallas cop six times on a public street, eject the empty brass from the cylinder and just walk away.
Third, after doing that, you don't go into a theater without paying so as to draw attention to yourself.