But nevertheless: I think Catholicism gives a certain protection against the inhuman thinking so usual in CPS circles, which perhaps Protestantism and atheism do not give equally naturally.
Maybe, though being an atheist in at least 3rd generation, I would disagree. 
Atheists tend to subscribe to humanistic views, with the main principal of "do to others as you would like others do to you".I bow to what is probably very superior knowledge as regards atheists, since my knowledge is restricted, it is true. I do not have any systematic overview.
But regarding Christians I think it may be as I said. The Catholic form of Christianity places Mary, the mother of Christ, very centrally. With that tends to go an ingrained awareness of and respect for motherhood that is absent from protestantism in my experience (Lutheran protestantism has been predominant in Norway since the reformation and still is). "Getting rid of" the worship of saints, and the Holy Virgin Mary among them, was one of the elements in the protestant reformation.
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This video is a year old:
Norvegija Barnevernet - vaikų medioklė"
Norvegijos on youtube, 18 January 2015
It is probably interesting in itself, I think (my guess is it is in Polish, with Lithuanian texting), and there are many more relevant ones in the right hand margin on youtube. I am very glad that there is so much activity exposing and discussing Norwegian CPS abroad now. The title I think means something like "Norwegian Barnevernet (the child protection service) hunts for children".
A search with the words "vaikų medioklė" gives a long list of hits.