2) It's somewhat understandable ... imagine being Aaron Alvarez ... you're doing life in prison (in California) for murder. That sucks, but ... OK ... You actually did commit the murder, so it's deserved. And then ... they want you to share a cell with a kiddie-raper!?!?!? That's intolerable.
3) Mr Alvarez seems to have committed another murder, and must pay for that. But the prison system that fails to protect inmates should also pay ... and it won't.
4) So what about the kids? Well, what indeed? The piece of filth that harmed them was tried, and convicted by a jury of his peers, and given the maximum sentence allowable by the law. If that sentence isn't enough for you, take it up with the legislature. Depending on so-called "prison justice" is wrong and cowardly. Prison should not be a playground for killers and perverts.
Putting him in a cell with a convicted murderer was tantamount to a death sentence by prison administration.