First, I think it’s a bit odd that you would say you feel assault with a deadly weapon and murder are shouldn’t be considered as “violent” because that perp usually has a reason for it. WTF? I will personally murder anyone who touches my children, but just because I had an excellent reason for it does NOT mean that I wouldn’t consider myself violent and deserving of a prison sentence.
Second, to answer the question- Ex-cons are welcome to rejoin society as they so choose, but inmates should not be allowed access to the internet, especially social sites, as they don’t deserve that sort of privilege. I don’t believe they derserve to watch TV, movies or any other sort of privileges like that either. But then, I have a harsh view of what prison should be.
Once they are released, then they are welcome to participate in whatever they choose, since they have served their time. I do, however, believe that there should be some sort of system in place to monitor all online activity by rapists and pedophiles.