I don't believe that those men (the murderers) will ever feel any remorse for their actions. From what I have seen, those racial feelings are deeply ingrained in some sections of the south. They see their hatred as a good thing. I think that they may even be treated as heros, in prison.
As an example, they just indicted one of the men guilty of killing three civil rights workers, back in the 60s. This man is now an old man, and he spits at the suggestion that what he did was wrong.
To be put to death is the only punishment they will understand.
Live simply, love generously, care deeply, speak kindly.
Cowards are cruel, but the brave love mercy.
"The purpose of life is to contribute, in some way, to making things better" Robert F. Kennedy