Years ago there were mental institutions and insane people were locked away. Now we think all these people can be fixed with a pill. I think we have seen enough to know that this doesn't always work. It has been proven many times over that when these violent people don't take their mood controlling drugs we end up with events like Newtown. Granted these cases need to be reviewed for each person, but when in doubt don't you think we should err on the side of caution.