hard to determine, every criminal is unique.
Rapists - when it is not possible to subdue them. beating them regardless is advised as a philosophical suggestion. But I think it is best to not kill them if you can convert them. Because as Rapists if you can make them want to Kill ONLY Rapists. then they are highly motivated.
I live by a few motos, "Live to kill rapists" is one of them. Even if all murder and killing is against morality. You should always be seeking and motivated to accomplish the goal.
It is logical to kill repeat offenders of murder and rape.
and IF Necessary first time offenders*
but it is advised not to.
As much as I loath Homosexuals, and adulterers and wish death upon them all. *(not rape or torture) It is again illogical to kill them, as it is politically unsound in a world with billions of people to target those which you encounter.
They deserve death however morally speaking because they promote the abandonment, disrespect, neglect and abuse of women by promoting atheist(morals being ficticious man made statements)/adultersous(no obligation relationships) perspectives to assholes, children, criminals, rapists, corrupt politicians. They glorify lazy people, drug addicts, doushbags,a dn promote social inequality... etc..
So I say. repeat offenders of Rape and murder. kill them.
but I hate the criminally insane (adulterers / atheists) ... but live with that I guess... They continually illustrate the stupidity of their belief system, which is technically continual Glorification of the Truth [God] through demonstration of his Wisdom and good guidance.