What if anything should society do about parents that abuse and sometimes severely injure or kill their children?

What if anything should society do about parents that abuse and sometimes severely injure or kill their children?

Parents have evolved to be the best protectors of their children. For millions of years children of abusive parents are less likely to survive so they don't pass on the genes of their abusive parents. In the short term, it seems so right to protect children from their abusive parents. However, in the long term their genes get passed on resulting in a greater percentage of abusive parents. However, that may take 1,000 or even10,000 and you cannot plan for what may happen that far into the future.

What if anything should society do about parents that abuse and sometimes severely injure or kill their children?
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