Life, the predictable pattern of work and family routine, can be passing as normal when the disastrous breaks in and opens up the cracks in our social and psychological makeup. The twin factors of denial and the desire to atone for another human's death, set up enough intrinsic stress but are screwed to destruction levels by medical ethics and racial/immigration issues. Our natural human way of exteriorising guilt is explored with tender insight.
And that whole struggle with Marciano to let her continue investigating the Eritrean's death was only to prove to herself that she wasn't one of those people who thought all blacks were the same. Or one of those people who thought a good Arab was a dead Arab and a good Bedouin was a Bedouin in prison. She was different. But when it came right down to it, she wouldn't go to a swimming pool full of Arabs even if she ranted and raved when there was a sign at the entrance saying NO ARABS ALLOWED.