Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

We must remember that the Zapruder film was ALTERED. And that is not a Ralph Cinque idea. It is a Jack White, Doug Horne, John Costella, David Mantik, James Fetzer, and other prominent researchers idea. 

And in altering it, they disassociated the background from the foreground and then put it back together after removing frames from the foreground in order to hide the slowing and stopping of the motorcade. 

And that may be why it seems like Mary Moorman isn't properly correlated with the Kennedys- where she is aiming her camera the wrong direction, like in Z-310.