If it is true that Lanza was on psych meds, then that means that he already DID receive professional care. Maybe he did not do anything in the past to warrant being institutionalized. It has been said that there is darkness in the heart of all men. Most, thankfully, keep things under control. However, no society can stop ALL crime. If we lived in a total police state that was able to prevent do that, I don't think most of us would want to live there.