Check out the newly released ‘Parkland’ Trailer Featuring Zac Efron, Billy Bob Thorton, Paul Giamatti, Marcia Gay Harden, Ron Livingston and the other talented cast. ‘Parkland’ is based on the book ‘Reclaiming History: The Assassination of President John F. Kennedy’ and gives an examination of the Kennedy assassination. ‘Parkland’ is due to be released in select theaters September 20th, 2013.