This new data shows that they continued to suffer losses, but it was actually the white population that experienced a larger decrease in life expectancy.
Each decision to locate a new trading desk somewhere else compounds over time to a loss of the critical mass that has sustained the City as a leading financial centre.
Although this shame detracts in no wise from the forcefulness and realism of the narrative, the choice of characters shows plainly enough where lie the sympathies of the writer.
Something that " detracts from" – notice the use of the proposition " from" here – something else is something that takes away strength or importance from something else.