make it law that if you know of any person with a mental disorder whom you know is a threat, you must report it.

Mothers kill their babies when they have post-partem depression and no one knew about it?..Someone did, a mother, a husband, a sister a Doctor..this sick person that killed all the innocent little children and adults at Sandy Hook School was known to have a mental problem.His own mother had guns.She knew her son was capable, so why didn't she , a Doctor, a neighbour anyone not report his problems.This is just criminally wrong.Innocent lives could be saved if people get involved, report weird behaviour, it's your duty,even if it's a loved one.Mental Illness is real !