If he is convicted and I understanbd there was a police officer eye witness I also say kill the sob. Once their necks start getting snapped other would be “crazies” will start to take note and realize they are not quite as crazy as they thought they were.
That's the problem, crazies are crazy. If they were rational, they wouldn't be crazies.
Now imagine some guy coming off an SSRI the voices in his head told him to stop taking because they'd guide him...
Now imagine his head clearing some day and realizing what he had done...
Every major school shooting and some other noteworthy shootings have involved a shooter who was on some sort of medication.
Who is to say this guy is any different?
I'm not trying to diminish the horror of what was done, the question is one of "Why?", and if it can be prevented in the future if the meds are the problem.
OR, would commit suicide along with their murders, but the devil can easily find dupes today. A demon can not be killed. It just passes on to the next person it can find.