Many things in the real world are ugly beyong any reasonable explanation or comprehension. To those who would "8X8" or "throw away the key," or make 'em do "hard labor" (THAT one's REALLY a laugh!!!!).
Get a job in any prison system; work it a while - don't run away. Do your best to remain ethical & considerate, hard working.. Make damn sure you don't sink to the ethical level of the more dysfunctional among the inmate population. Then tell us what you think can REALLY happen.
Suffice it to say that it (8X8, etc) AIN'T GONNA HAPPEN. It is truely not realistic.
Like treatment options for many biological diseases - diabetes mellitus comes to mind - there are NO good choices for dealing with many of the human race's sickest individuals. (& perhaps groups.. but ya gotta be careful.. Meanwhile, back at the ranch, the very groups some have mentioned are eyeing the nuclear arsenal of the former Soviet Union.. [We need a folk song abt the Mullah's w/their fingers on the buttons..] sleep soundly, gang.)