It appears some would rather these 21 men were out on the street praying on vulnerable girls. How odd.
I think a read of this may clear up some of the point raised such as entrapment and how they work WITH the Police :
https://darkjustice.co.uk/about-us/
Ideally the Police would do it, but given they are stretched ticking checkboxes and diversity forms perhaps this is the next best thing.
i deliberately put vigilante in inverted comma's because they do work with the Police, they to not mete out any punishment, do not entrap and the way they work will not target paediatricians (unless of course one is grooming). To me this is just an extension of the voluntary policeman so perhaps more of this, under definite guidelines form the Police would help safeguard children, which any right minded person must have as a priority?