By: Addison Wylie Is Parkland respectful towards its source material and depiction of the assassination of John F. Kennedy?  Yes.  Is it accurate to its time period?  Sure is.  Are the performances worthwhile?  You betcha. However, even though Peter Landesman’s film has plenty of good things going for it, I felt detached from the movie most of time.  I couldn’t fully invest my feelings into it, which is troublesome seeing as the film is an…