A landmark case
This movie should get more attention today, especially since our Constitutional rights are becoming more abridged in the wake of 9/11. Remember the famous "Miranda card" that police officers carry with them in order to read an accused person their rights? That card resulted, partially, from this very case. "You have the right to the presence of an attorney. If you cannot afford an attorney, one will be appointed before any questioning." Had Clarence Gideon not protested this particular injustice, how many possibly innocent persons would be wrongly imprisoned today? No one can know.
The movie also shows how laws are re-visited periodically, and what was acceptable during one era may become unacceptable later. Thus, we have a "living Constitution" that is adjusted (or re-interpreted) depending upon the common beliefs of a given era, as reflected by the courts, especially the Supreme Court. It is possible that Roe v Wade could be overturned in the future. It is also possible that the death penalty could be abolished.