I understand extremely well the complexities of mental illness, having had a family member by marriage who suffered, so I don't need to have that pointed out. And the words 'nut job' were written by Al, and then quoted, in context, by me. There are varying types and degrees of mental illness, and this is compounded by the fact that often, as you say, sufferers fail to get help. And if they do get help, they are then left floundering by poor mental health services. My point was, that whatever views this person had, he would be unlikely to have become so violent if he were not mentally ill. So his illness is a factor, and is very relevant. There are many, many drug users among us who are paranoid and psychotic, who do pose a danger to others, but who have not come to the attention of any authority...probably because they themselves haven't the slightest idea that they are ill.