Reform the sentencing laws for manslaughter and murder

Manslaughter ranges from one punch to someone stabbing someone who is unarmed multiple times in a sustained and brutal attack. Serving five years of ten in prison is not enough, instead of shutting prisons, there should be enough to allow violent offenders to serve a whole term sentence. Criminals these days know how to play the parole board knowing they may be able to go home halfway through their sentence even though they have taken a life. This situation does not deter violent people from carrying or arming themselves with a knife and ultimately killing someone.