I forgot the original question. Manson is batshit crazy and should probably remain locked up. I would like to see the girls released. They realized how fucking stupid they were very early in their prison terms and playing "Lucy and the Football" with their parole once a year seems a bit extreme. Susan Atkins is dead. They even let out the one that tried to kill Ford.
I don't remember if I responded earlier in this thread (nor are you probably around two years later), but in general I agree with this.
1. Manson is a nut. Probably mostly "harmless" but essentially his power was charisma -- he was good at getting a few zealots to do really awful things. His gang would not have become criminals if he hadn't shaped the group and spurred them on. And the stuff that happened to the victims was pretty horrible, if you've read anything about the murders of Sharon Tate (a late-term pregnant woman who was stabbed repeatedly until she died) and the other couple who was butchered in their home. I've examined a lot of crimes over the years, and these were just heinous, cold-blooded, heartless murders with some degree of emotional torture inflicted on the victims as well as how they were killed.
To be honest, though, Manson is probably safer in prison. I'm pretty sure someone would just kill him if he got out, and that would be that. he's also been in so long, and he's crazy enough, that I doubt he'd function well outside of it.
2. The girls? Yeah, Atkins became a Christian years back, then died of cancer. The other girls (women now, obviously) have done a lot of time, enough to be sorry for what they did while young and having repented. From reviewing the case, I do believe they are "rehabilitated" and wouldn't expect them to harm anyone.
HOWEVER... again, they're probably safer in prison than outside. And the reality is that sometimes a crime is SO bad (and their behavior during the trials didn't help them much in that regard) that realistically even if you 'serve your time' you're still screwed. The murders were heinous enough that the family of the victims understandably never wants to see them get out, and it's likely they never will.
So I can't even say they should get out, as they are guilty of the crimes they were charged with and it can never be set right; I just think in terms of whether they would function as productive members of society? Sure, I think they would be responsible citizens and not cause more issues. But they will probably have to bear the yoke of their crimes and find ways to help society from inside prison, because realistically even if they COULD get out, I really doubt society will ever feel comfortable letting them out.
And of course, there is the deterrent factor to be spoken of, to send a message.