For the most part, individuals who have mental health issues are not a threat to anyone but themselves. Often, the medications they're on have side affects that are untenable and so they go off the meds to feel better. Unfortunately, they also become "ill" again (not that they never were) but you get my meaning. Having worked in the past with people who had mental health issues, the most prevelant issue was keeping them on their medications. The individuals that came to our agency were, for the most part, very gentle and loving individuals who happen to have mental health problems.
Now in the case of Vince Li, he's a different animal completely. While he is not responsible for being ill, we do need to protect society from him and it becomes a balancing act between either keeping him in an institution for the rest of his life or ensuring that he takes his medications on a daily basis, even if by force. In todays world, unfortunately, the words "institution" and "force" are big no nos, i.e. not politically correct) but the fact remains that, while the vast majority of mental health clients are harmless, we do need to take seriously the .05 or 1% or whatever percentage of those who are SERIOUSLY ill and SERIOUSLY present a danger the to the public. I'm not advocating locking him up in a celler either - I'm saying the need to be kept out of the general population, permanently in an environment that treats them as human beings albeit really sick human beings.
As for the doctor, I have NEVER believed he was mentally ill and I still don't - don't care what the so call professionals say - I don't know why I'm so adamant about this - call it a "gut" feeling and he too, should never see the light of day - preferably in a jail cell and not an institution.
JMHO