Identification of such criminals is essential if they are not to re-rape, re-sodomize, re-molest.
Prominent ear notching works for other species of animals, and it will work with criminals such as these.
PS Ear notches are a non-verbal communication and avoid language issues entirely.
Castration works wonders. While I prefer a manual (or is it Manuel?) method, I'd settle for the chemical route - and heavily advertise it South of the Border.
“Ear notches are a non-verbal communication and avoid language issues entirely.”
Notch right ear for illegal alien terrorist sodomizers from the south and left ear for terrorist islamofacist sodomizers from where ever they come from...