Shot! That's too kind! They ought to be drawn and quartered on national television and have their intestines hanging out for availability to the flies and maggots and be slowly eaten alive! Shot! HA! Way too quick!
As far as rehabilitating them, that's not even an option. I work in the prison system, there is no such thing as 'rehabilitation', all they do is get out and commit another crime so they can come back in. Why not! After all, they do get free food, clothing, shelter, cable TV, and free education up to a Doctorate! Oh yeah, and they don't have to work if they don't want to either! Rehabilitating, that's a laugh!