This is a homework related problem.
My question is not exactly related to science, but the reason why I'm writing it on this website is that I need to ask English-speaking people.
The question:
In an article we read in school the following sentence was written:
This raises fundamental questions about the role of the law in Britain and the police in relationship to commonplace family affinities.
Could somebody please explain what "commonplace family affinities" means in this sentence?