Asylums. It could have been me. My son threatened me for years.
Very sorry to hear this. These are such difficult situations. Parents love their children but it's so hard to know how to love someone who is mentally ill. Parents try, in love, to do what they can for their mentally ill kids and it's very hard to hand someone over to "the system" until, unfortunately, something really bad happens and it becomes apparent there is no helping them on a personal basis.