Oliver Stone explains it all for you.

Rating: Null/10 (21 December 2005)

This movie did hold my interest, saw it at a 5:00PM showing, didn't look at my watch until 7:15pm. I was 14 in 1963, in my freshman year of HS so I remember very clearly where I was about 2PM EDT on November 22 1963. This movie was like time traveling, Stone gets a lot of the period details right, I read the actor who played Oswald studied films and tapes of Oswald speaking to capture Oswald's speech patterns. That said, the movie is basically a paean to Jim Garrison and his conspiracy theories-which were repudiated the jurors who found Clay Shaw not guilty. What the point was of having the real Jim Garrison appear as Earl Warren I do not know, though they did a very good makeup job on him. I enjoyed the movie at the time, though if I never see it again I will not feel deprived.