well, I can understand why you think it, but where would you stop??
they used to enforce sterilisation on those women that were classed 'sub-normal' (the wording at the time), and that was massively wrong....what right do any of us have to do that to anyone?
I know you could argue that what right should these people have to then be able to have more children, but surely if they have been caught, then they would be imprisoned and then any future children would be taken into care anyway.
and surely, sterilising them after the fact would not stop the simple fact that they have already ruined a childs life!
I also wonder if they were sterilised, that would mean that the authorities may possibly think they are now not a threat when actually, they still would be......what about meeting someone with children?? they would still have access to children, so, nope, this would not work.