Manipulation, nothing else
This movie, like other anti-death penalty movies, is pure manipulation.
Just notice one thing: in all of these movies, the convicted murderers were either a. Actually innocent, o b. Deeply regret their crime sometime in the movie. That is what they have to use to try to convince people to oppose the death penalty. But guess what, those people are overwhelmingly guilty as they could be, and they psychopaths, they do not feel guilty. But try putting that into an anti-death penalty movie.
Also try focusing at least the same amount of time on the VICTIMS of the horrendous crimes as on the perpetrators, and let's see how bad people would feel about them getting executed then...