[Redbob]

"Almost 60 percent have mental health problems."

And are rightly locked-up to protect society.

That's WHY we lock people away to protect society. This is much more merciful than in ancient times, when they simply terminated the persistently dangerous.

[HiTech RedNeck]

A number of variables and truths have been left out of this analysis, but hey who really wants to do more than shoot from the hip?