It is an excellent book and a very good movie. I bought it on VHS a long time ago and all of my children have watched it.
The story is about intolerance, not necessarily racism. Boo Radley is the lesson, not the rape trial. Bob Eueal is the villian, killed by the previously scary Boo Radley who has made many generous gestures to the Finch children and, indeed, saves their lives.
A fantastic read.
I'm fuzzy on it.... I should see it again.