"the famous amateur film footage"

History The Atlantic rounds up what's actually known about the Kennedy Assassination, 47 years on:

"In a 2005 book, Breach of Trust: How the Warren Commission Failed the Nation and Why, Gerald McKnight of Hood College suggested that a high-level plot involving senior U.S. intelligence officials was probably responsible for the president's death. In his 2003 book about photographic evidence, The Zapruder Film: Reframing JFK's Assassination, David Wrone of the University of Wisconsin-Stevens Point argued that the famous amateur film footage of the assassination proves that Kennedy was hit by gunfire from two different directions. Wrone did not advocate a theory of who was responsible."

Sadly, they seem to have missed off the strongest possibility. At this point I don't know what to believe and I don't think anyone alive today will really find out the truth.