Here is a true innocent killed by a victim of paranoid schizophrenia which I wouldn't wish on my worst enemy. In the 'old' days these were the people sent for life confinement in 'those institutions' of the kind featured in "One Flew over the Cuckoo's Nest". Now, following the revealed horrors of many of those places, these people have been 'de-institutionalized'.
For some of them this has been a very good thing, for most it has meant at best group homes or skid row, and for the worst - these nightmare incidents. In hindsight these are the ones who need to be closely confined for the sake of society as well as their own safety. But this is hindsight and there are some/many[?] who do not do these horrible things yet suffer the same sickness.
Drugs that reduce their problems also make them self-aware zombies, another horror but when they go 'off their meds', the sickness frequently worsens as the mind/body adapts.
Pray for the day when medicine finds cures for this monster. Meantime, in futility and compassion I pray for all involved in this nightmare, and ask God for speedy deliverance.
My above post was to flesh out the fact that this paranoid schizophrenia is an area where there are no good things and these persons too are sufferers. So I will pray for them as well, hoping that someday this condition will be defeated, PLEASE GOD!
Good news, we have a cure! Small doses of lead, applied speedily to the brain, are 100% effective.