The overall rating for this documentary is not an accurate accounting. Unfortunately, those who wanted to keep Mumia on death row are always actively trying to discredit him. When they caught wind of the existence of IMDb (not surprising it took so long), the ratings abruptly dropped. They don't have the intelligence required to understand Mumia's case or his humanitarian activism but they are master manipulators.
If you have been following Mumia as I have since the early 1980s, you will love this movie.
If you are not familiar with Mumia and are a humanitarian, you will love this movie. Follow it up with "Justice on Trial: Mumia Abu-Jamal" and "Mumia Abu-Jamal: A Case for Reasonable Doubt?".
To understand the crass and cruel assumptions of those who defame him, watch "The Barrel of a Gun."