I used to work with SMIs (Severly Mentally Ill) in both group homes and vocational settings. When doing agency work, that agency took in the worst of the worst, because it paid more. These people were so far whacked that the agency was the last stop on the way to Arizona State Hospital (ASH) or their first and usually last stop on the way back into society.
Since the successful campaign to close mental sanitariums in the 1970s, ALL these crazy...and I mean TRULY CRAZY...people live in your cities and towns, maybe even in your own neighborhood. You can get that information off of your state's mental health website, as each group home has to be licensed and inspected, public notice, etc. etc.
The crybabies of society need to get over it. Some people need the death penalty, some people need to be locked up for all their life. Some people are phuckin' nuts and completely harmless.
Others will sedate you while you are sleeping, so that when you wake up the first thing you see is them feasting on your raw flesh as they trim it from your body. But lock that person up for life and "that's inhumane!"