In separating out, say, legal and moral requirements, I tend to work with paradigms rather than strict divisions - eg, paradigmatically, legal requirements are jurisdictionally bound whereas ethical requirements are aspirationally universal; ethical requirements focus especially on intentions whereas legal requirements focus primarily on conduct; ethical requirements take priority over legal requirements; and so on.

I confess to being something of a philosophical butterfly. The world is full of so many interesting questions, and although my greatest passion is for some form of applied ethics, that leaves me with oodles of possibilities, many of which I have never had the time or opportunity to explore in great depth.

I grew up in a home in which loyalty to family was central to my father's outlook. Adolescent changes to my outlook (which set me against parental values) made me very critical of loyalty, reinforced by certain religious writers I found influential at that time. Harry Blamires, The Christian Mind. But I remained conflicted about loyalty.

As a matter of ethics - our broader social life needs to be constrained by law and other devices - resolving at the societal level matters that should not be left for individual ethical negotiation. What is important - in the end - is that we are enabled to flourish in ways that acknowledge our dignity.

Police have both extra constraints and extra permissions - on the one hand, they can't dodge involvement in social disorder as the rest of us can and they may be required to conduct themselves privately in a way that does not undermine their public authority; on the other hand, they have permission to engage in deceptions, invasions of privacy and uses of force that are forbidden to the rest of us. But this does not put them beyond common morality.

I see loyalty - roughly perseverance in relational commitments despite the cost of such perseverance - as an important human value/virtue. Think of it as a kind of relational glue.

Police do not work at the immediate direction of the communities they serve, but through their institutional connections. Police departments may develop structures, modi operandi, and cultures that are ethically problematic.