Death of a President(2006)

An unknown gunman assassinates George W. Bush. A couple of years later, an investigative documentary is made. It features all the people involved that fateful day: the protestors outside a Chicago hotel; the suspects in the shooting and their families; the Secret Service men who failed to protect their charge; the press; and an array of experts, desperately seeking meaning in this horrible act of violence. We learn, agonizingly, what happened to America after the death of a president.