All of us have films which have made an impression on us, likewise fictional books. Where the latter is concerned it has been Light Cavalry Action by John Harris (I can never understand why this has never been made into a film – if you have never read this book then get a copy from Amazon!): and in regard to the former, for me, it has to be Inherit the Wind, this film being a fictionalised version of the Skopes Monkey Trial.
In the first link we see someone attempting to correct a wrong, to correct a preconceived and apparently accepted notion that the right decision had been made. In the second link we see someone striving to correct a preconceived and apparently accepted notion that something that was accepted as right was not so. Fast forward a century or so (figure of speech….) and we find history repeating itself (as it tends to so do…..).