If they are mentally ill they should be in hospital, if they aren't they should be executed
Just to clarify, the vast majority of people with a mental illness do not commit crimes or are violent. The scum that did this, I believe, had the capacity to know that what he was doing was wrong. I do not believe that people like this should be allowed to use mental illness as a 'get out of jail free' card. I believe, Mark, that your second suggestion is more appropriate.