For me, an area of moral clarity is: you`re in front of someone who`s suffering and you have the tools at your disposal to alleviate that suffering or even eradicate it, and you act.
Civil and political rights are critical, but not often the real problem for the destitute sick. My patients in Haiti can now vote but they can`t get medical care or clean water.
But if you`re asking my opinion, I would argue that a social justice approach should be central to medicine and utilized to be central to public health. This could be very simple: the well should take care of the sick.