The justice system does seem to be a bit of mess at the moment. I read yesterday that one of the chief justices thinks that the system is failing.
Child murder, in particular, is a very emotive subject, but I don't think anything is actually solved by baseball bats or bricks. We have evolved as a society and should know by now, that that kind of thing is just as ineffective as a ten year sentence. But how can any law enforcement agency confer more punitive sentences when it has only a few hundred places left in it's prisons?
I'm fairly sure that a greater number of violent criminals would receive a longer sentence if the re-prioritised the crimes. For example, crimes involving large amounts of money, like large-scale fraud, nearly always result in long sentences. Does this mean that the law and we as a society value money and property more than life?
The same people who call for burglars and muggers to be given custodial sentences should realise that they take up prison space that could be used for more serious criminals.