An executive at a U. S. steel company uses growth in gross domestic product as one way to develop trends in industry steel use, so he records GDP change for each year on a graph. However, the executive's figures are considerably higher than those of the staff economist, who also has drawn a graph.

the answer is:  

he is voicing feelings shared by all humans regardless of race.

in paul laurence dunbar's poem "we wear the mask," he replicates the words mask and we to emphasize how people in general -not just black americans- hide their true feelings. he suggests the masks cover people's faces and eyes, which are the main parts that display their emotions. he also thinks people's pain conceal behind those masks, so that they cannot see reality and nobody is able to see one another's sorrow.

i would say the correct answer is not concrete.